WO2004015156A1 - 燃料電池用金属材料、それを用いた燃料電池および、その材料の製造方法 - Google Patents
燃料電池用金属材料、それを用いた燃料電池および、その材料の製造方法 Download PDFInfo
- Publication number
- WO2004015156A1 WO2004015156A1 PCT/JP2003/010060 JP0310060W WO2004015156A1 WO 2004015156 A1 WO2004015156 A1 WO 2004015156A1 JP 0310060 W JP0310060 W JP 0310060W WO 2004015156 A1 WO2004015156 A1 WO 2004015156A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mass
- precipitated
- fuel cell
- metal material
- precipitate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/004—Dispersions; Precipitations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a metal material for a solid oxide refractory battery, and in particular, to a metal material for an inter-connector of a solid oxide rechargeable battery that has a fiber having oxidation resistance and electrical conductivity during use at high temperatures.
- a metal material for a solid oxide refractory battery and in particular, to a metal material for an inter-connector of a solid oxide rechargeable battery that has a fiber having oxidation resistance and electrical conductivity during use at high temperatures.
- Fe-Cr alloy materials Fe-Cr alloy materials
- fuel cells using them and methods of manufacturing the materials.
- the metal material of the present invention can be applied to peripheral members of a solid oxide fuel cell requiring oxidation resistance, other fuel cells, heat exchangers, reformers, and the like.
- Fuel tanks emit little harmful gas and have high power generation efficiency, so they are expected to be applied to a wide range of power generation systems such as large-scale power generation, cogeneration systems, and automobile power supplies.
- solid oxide batteries also known as solid torsion refractory batteries
- solid torsion refractory batteries operate at 700 to 1000 ° C and do not require the use of a catalyst for the m3 ⁇ 4 reaction, coal reformed gas, etc. It can be used with various types of fuel gas, and it can be combined with gas turbines or steam turbines by using high temperature, and is attracting attention as a next-generation energy source.
- this solid oxide refractory tank is composed of a liquefied natural material 1, 2, 3 and an interconnector 4 (also called a separator).
- an interconnector 4 also called a separator.
- Ion-conductive solid electrolyte such Ittoria stabilized Jinorekoyua (YSZ) in 1, on both sides (La, Sr) Mn0 3, etc. of the anode (air electrode) 2 and Ni / YSZ (Ni and Itsutoria stabilizing Jirukoyua Cermet) etc! (Electrode electrode) 3 is attached, the electrolyte 1 is used as a partition, and fuel gas 5 such as hydrogen gas is supplied to one side and oxidizing gas 6 such as air is supplied to the other side to extract electricity.
- fuel gas 5 such as hydrogen gas is supplied to one side
- oxidizing gas 6 such as air is supplied to the other side to extract electricity.
- the interconnector 4 supports a three-layered electrolyte-electrolyte assembly consisting of an electrolyte 1, an anode 2, and a cathode 3, forms a gas flow path 7, and serves to flow a current. It has eyes.
- Japanese Patent Application Laid-Open No. 6-264193 discloses a technique for responding to such demands.
- a metal material for a solid oxide fuel cell C: less than 0.1 lmass%, and Si: 0.5 to 3.0 mass%.
- this metal material generates an oxide film mainly composed of A1-based oxides in order to considerably convert A1 to A1.
- A1 oxides are not suitable for use as interconnects for solid oxides »fuel cells because of their low electrical conductivity.
- austenitic stainless steel ⁇ has a larger thermal expansion gI number than that of the electrolyte 1 in which the thermal expansion of the yttria-stabilized zirconia (from 20 to 900 ° C is 9 or more: ISX KTO) ( Since the thermal expansion from 20 ° C to 900 ° C has a number of 16 to 20 X 1 (TV), when ⁇ changes with the start and stop, electrolyte and cracks may occur due to thermal expansion difficulties Also expensive,
- Japanese Patent Application Laid-Open No. Hei 7-166301 discloses that as an interconnector for a solid oxide refractory battery, a material comprising 60 to 82 mass% of Fe and 18 to 40 mass% of Cr is used for a single cell (cell). A technique is disclosed in which an element (La, Y, Ce, or A1), which provides resistance to weaving between the air electrode, is added.
- this interconnect material does not have oxidation resistance enough to withstand long-term use at high temperatures, and there is a problem that the electrical resistance of the oxide film necessarily increases.
- Japanese Patent Application Laid-Open No. 7-145454 discloses that as a metal material for a solid oxide fuel cell, Cr: 5 to 30 mass%, Co: 3 to 45 mass%, La: l mass 0 / o or less, and the balance substantially A material consisting of Fe is disclosed. However, it does not have sufficient characteristics in terms of oxidation resistance, especially in terms of oxidation increase.
- Japanese Patent Application Laid-Open No. 9-157801 discloses that as a steel for an interconnector for a solid oxide refractory battery, C: 0.2 raass% or less, Si: 0.2 to 3.0 mass 0 / o, Mn: 0.2 to 1.0 mass%, Cr: 15 to 30 mass%, Y: 0.5 mass% or less, REM: 0.2 mass% or less, Zr: l mass 0 ⁇ , the balance is substantial Disclose a material consisting of Fe copper. However, this material is also evaluated for the amount of scale peeling with respect to oxidation resistance. However, it is not enough to suppress the increase in the thickness of oxidation, and it is necessary to avoid the increase in electrical resistance due to the growth of an oxide film. I can't. Also, the reduction of mmrn. Is insufficient.
- Japanese Patent Application Laid-Open No. 10-280103 discloses that solid oxides: steel for interconnects for fuel cells, C: 0.2 mass% or less, Si: 3.0 mass% or less, Mn: 1.0 mass % Or less, Cr: 15 to 30 mass%, Hf: 0.5 raass 0 %, and the balance substantially consists of Fe.
- the amount of peeling of the scale with respect to oxidation resistance has been evaluated, but it is insufficient to suppress the increase in the thickness of the oxide film. An increase in electrical resistance due to the growth of the oxide film cannot be avoided. Also, the number is not sufficiently reduced.
- the conventionally disclosed metal materials do not always have sufficient oxidation resistance and electrical conductivity for use as solid oxide battery interconnect connectors.
- it is also a member that requires electrical conductivity at the same time it is necessary to have a thin oxide film together with the electrical conductivity of the oxide.
- A1-based oxides which form an excellent protective film, have low electric conductivity s, and the cell performance is greatly reduced due to the increase in electric resistance due to the formation of an oxide film. Therefore, metal materials containing a large amount of A1 cannot be used for interconnectors. Even if a Fe-Cr alloy is used to form a Cr-based oxide film with high electrical conductivity ⁇ , if the growth rate of the film cannot be reduced, let alone the adhesion of the film, Not applicable. In other words, simply encouraging REM etc. in Fe-Cr alloys is not enough for interconnectors.
- An object of the present invention is to have excellent oxidation resistance at a high temperature of 700 to 90 (T, i.e., the oxidation rate is / J, and the formed oxide film has excellent W 3 ⁇ 4 pliability and good electrical conductivity.
- T i.e., the oxidation rate is / J
- the formed oxide film has excellent W 3 ⁇ 4 pliability and good electrical conductivity.
- a metal material for an interconnector Fe—Cr alloy
- a solid oxide battery inter-connector For a solid oxide battery inter-connector, it is required to form a protective film that has a small difference in thermal expansion from yttria-stabilized ginoreconia (YSZ), which is an electroconductive material, and has excellent power and electrical conductivity. Therefore, for example, although ferritic metallic material to produce a protective coating consisting mainly of Cr 2 0 3 is promising, as in the prior art, mere ⁇ Ro and REM in Fe- Cr-based alloys These materials have insufficient properties and require further improvement in oxidation resistance.
- YSZ yttria-stabilized ginoreconia
- the present inventors have intensively studied the effects of added elements on oxidation resistance in order to solve the above-mentioned problems. As a result, it was found that the oxidation resistance was greatly improved by adding Mo and Nb in combination.
- the most important feature of the present invention is the solid oxide fuel A large amount of intermetallic compound (a kind of precipitate) precipitates at the grain boundary of the base metal in the high-temperature and long-time use fiber, which is the environment of the pond, and controls the diffusion (suppression) of these forces S elements. By doing so, the oxidation resistance is improved.
- the intermetallic compound is also precipitated by Mo or Nb, but only by adding these elements in a complex manner, a large amount of the intermetallic compound precipitates at the grain boundaries of the base material, And control (suppress) the diffusion of each element such as Si and Si, and have found that the oxidation resistance is remarkably improved.
- the problem of an increase in oxide exfoliation at high temperatures which is unique to the Mo-Nb system, can be prevented by adding Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Zr, and Hf. Issued. Even if these openings are made, since the oxide film formed is mainly composed of Cr 2 O 3 , there is no large increase in electric resistance, and only the increase in oxidation can be suppressed purely, and the increase in electric resistance is suppressed. be able to.
- the present invention which has been developed based on the above findings, comprises: C: 0.20 raass% or less, Si: 0.02 to; 1.0 mass%, Mn: 2.0 mass% or less, Cr: 10 to 40 mass%, Mo: 0.03 to 5.0 mass%, Nb: 0.1 to 3.0 raass%, satisfy 0.1 l ⁇ MoZ b ⁇ 30, and Sc, Y, La, Ce, Pr, Nd , Pm, Sm, Zr and Hf is a metal material for fuel cells containing at least 1.0 raass% in total and one or more selected from the group consisting of Fe and inevitable impurities .
- the metal material for a fuel cell may further include a precipitate, and the amount of Fe, the amount of Cr, and the amount of Si contained in the precipitate may be the following (1) It is a fuel cell material that satisfies the formula.
- the present invention further reduces the amount of Fe, Cr, and Si contained in the extracted material of 3 ⁇ 4 ⁇ which has been used for at least 1000 hours by operating the battery at 800 ° C.
- This is a fuel tank metal material that satisfies the following formula (2) with respect to the metal material. [Precipitated Fe] + [precipitated Cr] + [precipitated Si] 0.03 mass% ⁇ ⁇ -(2)
- the present invention is a metal material for a fuel cell, wherein the metal material for Fujimi fuel is hot pressure M # or cold pressure.
- the present invention provides the fuel cell metal material, wherein the amount of Fe, the amount of Cr, and the amount of Si contained in the precipitate are further defined by the following ( It is a metal material for a fuel tank that satisfies Equation 3).
- the metal material of the present invention is preferably a heat-resistant material for solid oxide fuel cells, and more preferably a heat-resistant material for solid oxide fuel cell inter-connectors. Further, the present invention is a solid oxide fuel cell using the above metal material for fuel.
- C 0.20 mass% or less
- Si 0.02 to 1.0 mass%
- Mn 2.0 mass% or less
- Cr 10 to 40 mass%
- Mo 0 03-5.0 mass%
- b 0.1-3.0 mass% and satisfies 0.1 ⁇ Mo / Nb ⁇ 30.
- the metal material for a fuel cell further includes a precipitate, and the amount of Fe, the amount of Cr, and the amount of Si contained in the precipitate are the following (1)
- the present invention is a method for producing a metal material for fuel use, which is further cold-rolled or annealed and pickled.
- the present invention further provides a precipitation treatment of the above-described metal material for a fuel cell, the Fe amount, the Cr amount, the Si amount force S, and the lift self-metal material contained in the precipitate are as follows: This is a method for producing a metal material for a fuel cell that satisfies the formula (3).
- the present invention is a method for producing a metal material for a fuel cell, wherein the metal material for a fuel cell is further subjected to press working, cutting, corrugating, or etching. Further, the present invention is a method for producing a metal material for a fuel cell, wherein the metal material for a fuel cell is for a solid oxide fuel cell.
- the present invention is a method for producing a metal material for a fuel cell, wherein the metal material for a fuel cell is used for an interconnect of a solid oxide fuel cell.
- FIG. 1 is a diagram schematically showing an example of the structure of a solid oxide fuel cell.
- Figure 2 Schematic diagram of the device for measuring the electrical resistance of the interconnector.
- Figure 3 Schematic diagram of a device for measuring the power generation characteristics of a solid oxide battery.
- the solid oxide fuel cell according to the present invention is described below.
- the composition of the components of the metal material for Yana's inter-connector is described.
- C has the effect of forming carbides and increasing the high-temperature strength. To obtain this effect, it is desirable to add 0.001 mass% or more. However, if the addition amount exceeds 0.20 mass%, the workability is degraded, and the amount of Cr effective for oxidation resistance is reduced by combining with &. More preferably, it is 0.10 mass% or less.
- Si has an effect of accelerating the precipitation of intermetallic compounds.
- With excessive addition leads to workability deterioration, as it reduces the electrical conductivity generates an electrical conductivity of a low Si0 2 near the interface between the oxide film and Kaba, limited to 0.02 to 1.0 mass% .
- Mn is necessary to improve the adhesion of the oxide film. To get this effect, It is desirable to add 0.05 mass% or more. However, if added excessively, the oxidation rate will increase, so it is limited to 2.0 mass% or less.
- Cr is an important element for maintaining oxidation resistance and electrical conductivity by forming a Cr 2 O 3 film.
- excessive addition causes deterioration of workability, so it is limited to 10 to 40 mass%. More preferably, it is 10 to 30 mass%.
- Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Zr and Hf are 0.005 mass in total of one or two or more. It has the effect of improving the oxidation resistance by improving the adhesion of the oxide film by adding a small amount on / c ⁇ . However, excessive addition degrades hot workability, so it is limited to 1.0 mass% or less. More preferably, it is 0.005 to 0.5 mass%.
- A1 2.0 mass% or less, Cu: 0.20 mass% or less, Ni: 1.0 mass% or less, V: 1.0 mass% or less, W: 3.0 mass% or less, Ta: 2.0 mass% or less, Ti: 0.5 mass% or less, Mg: 0.05 mass% or less, Ca: 0.05 mass% or less, Co: 5.0 mass% or less
- each of the impurities P, S, and force are special to the characteristics of the present invention. Has no effect.
- the intermetallic compounds of Mo and Nb which are one of the precipitates, are converted into solid oxide fuel cells at a high temperature of 700 ° C to 900 ° C.
- Precipitation at the crystal grain boundaries is the most important aspect of the present invention.
- a high temperature environment of 700 ° C. to 900 ° C. which is the environment of solid oxide materials
- a large amount of intermetallic compounds are precipitated at the «W grain boundaries, Recitation of each element such as Cr, Fe and Si To improve oxidation resistance.
- component range of the present invention is included in the precipitate
- the amount of Fe, Cr, and Si contained in the precipitates when used for more than 100 hours at a battery operating temperature of 800 ° C. It is preferable that the following expression (2) is satisfied.
- [precipitated Fe] Fe amount contained in the precipitate (mass ° / 0 )
- the amount of Fe, Cr, and Si contained in the precipitates was higher than that of Fujimi Metal Materials. It is preferable to satisfy the following expression (1)! /.
- hot-rolled material or cold-rolled material is previously required at 500-900 ° C. ⁇ 200 hours in the atmosphere of argon and air ⁇ ", and the amount of Fe, Cr and Si contained in the precipitate is calculated by the following formula (3) May be satisfied.
- the amount of Fe, Cr and Si deposited was determined by using a 10% AA-based electrolyte (10% acetylaceton-1% tetramethylan) before and after the oxidation resistance test and after the precipitation treatment. Dissolved by constant current electrolysis in a non-aqueous solvent using methanol chloride-residual methanol in an intense night, and the amount of Fe, Cr and Si in the remaining extraction residue was determined by Inductively Coupled Plasma Atomic Emission Spectrometry. -Atomic Emission), the amount of precipitation of Fe, Cr and Si elements (mass% in metal material) was determined.
- the thermal expansion number targeted by the present invention is not more than 1S.OXKT ⁇ C at 20 ° C to 900 ° C. If the thermal swelling number exceeds 13.0 X 10 ⁇ / ° C from 20 ° C to 900 ° C, it may peel off from the electrolyte due to the difference in thermal expansion. For this reason, the number of thermal expansions was set to 13.0 X 10 "V ° C or less from 20 ° C to 900 ° C. More preferably, 12.6 X 1 ( ⁇ from 20 ° C to 900 ° C.
- the thermal expansion coefficient was measured at a rate of 5 ° C / min from 20 ° C to 5 ° C in an argon atmosphere when the temperature reached 900 ° C. Assuming that the longitudinal dimension of the sample was Lran, it was obtained by dividing (L-20) / 20 by (900-20) For each sample, three samples were measured and averaged.
- the electric resistance was measured by sandwiching a sample (20 thigh angle, and 5 awakes) with a Pt plate with a thickness of lram and a 20-pitch angle, and applying a current to each of the upper and lower Pt plates.
- the Pt wire for flffi measurement was joined, and then under a load of 0.2MPa, 3 ⁇ 4g at 800 ° C for 1 hour, and a current of 1.2A was passed to measure the distance between the upper and lower Pt plates. Multiplied by the area cm 2
- the electrical resistance value (area resistivity) was determined by the above method. For each sample, three were measured and averaged.
- the structure has as little austenite phase as possible with a large coefficient of thermal expansion, and the area ratio of the austenite phase is 10% or less. More preferably, ferrite
- the number of (partial precipitates) or 2 sm (partial precipitates) of ferrite and martensite is smaller than that of austenite, and thus the number is small.
- the method of melting a metal material according to the present invention does not need to be particularly limited since all methods of ⁇ ! Can be generally applied.
- the appropriate IB and It is preferable to smelt the molten steel adjusted to the composition range, and to carry out secondary by strong stirring and vacuum oxygen decarburization treatment (SS-VOD).
- SS-VOD strong stirring and vacuum oxygen decarburization treatment
- it is preferable from the viewpoint of productivity and quality.
- the slab obtained by forging is re-heated, hot-rolled if necessary, annealed at 700 to 1200 ° C, and then pickled.
- the heat after pickling is suitable as a material for forming an interconnector by forming a gas flow path by J processing.
- a cold rolled sheet obtained by further cold rolling the Kamisomi M sheet or further annealing and pickling at 700 to 1200 ° C.
- a cold rolled sheet as a material for the cutting IJ processing.
- other methods such as corrugate processing and etching processing may be used.
- the hot-rolled sheet or cold-rolled annealed sheet is preliminarily deposited at 500 to 900 ° C, for! To 200 hours in an arbitrary atmosphere such as anoregon or air before being incorporated into the interconnector.
- Fe content, Cr content, and Si content contained in an object The metal material may satisfy the following expression (3). [Precipitated Fe] + [precipitated Cr] + [precipitated Si] ⁇ 0.02 mass% ⁇ ⁇ ⁇ (3) where [precipitated Fe]: amount of Fe contained in the precipitate (raass%)
- the hot rolled sheet or the cold rolled annealed sheet is also formed into a fuel cell constituent member other than the interconnector (for example, a heat exchange reformer).
- a normal arc such as MIG (Metal Inert Gas), MAG (Metal Activated Gas), TIG (Tungsten Inert Gas), spot, High-frequency resistance, such as electric seams and seams, and high-frequency resistance, such as welding, high-frequency induction, and brazing are applicable.
- MIG Metal Inert Gas
- MAG Metal Activated Gas
- TIG Tusten Inert Gas
- spot spot
- High-frequency resistance such as electric seams and seams
- high-frequency resistance such as welding, high-frequency induction, and brazing are applicable.
- Oxidation tests were carried out in a furnace heated to 800 ° C. for 1000 hours in an air atmosphere, and oxides formed on the steel sheet surface were identified by X-ray diffraction.
- the weight difference between the test pieces before and after the test was divided by the total surface area of the test pieces to measure the weight gain by oxidation.
- a brush made of Ni-Pin was pressed against the sample after the oxidation test by hand, and the surface was rubbed five times, and the weight difference before and after the work was measured. Difference is less than O.lmg, no peeling
- Oxidation resistance test> To evaluate the long-term oxidation resistance test, the oxidation resistance test Kazuru test was conducted. Conduct an acid raith test at 1000 ° C for 600 hours (800 ° C x 100,000 hours or more) in an air atmosphere, and investigate the increase in oxidation and oxide film peeling properties in the same manner as the oxidation resistance test described above. did.
- the amount of Fe, Cr and Si deposited was determined by the test before and after the oxidation resistance test. ) Dissolved by constant-current electrolysis at night, and the amount of Fe, Cr and Si in the remaining extraction residue is determined by Inductively Coupled Plasma-Atomic Emission The analysis was performed, and the amounts of Fe, Cr, and Si deposited (mass% based on the metal material) were determined from the results.
- the coefficient of thermal expansion was determined by measuring a sample of 20 thighs ⁇ 5 thighs in an argon atmosphere at 5 ° / min from 20 ° C, and when the longitudinal dimension at 900 ° C was Lmm, (L ⁇ It was determined by dividing 20) / 20 by (900-20) ° C. For each sample, 3 ⁇ 3 ⁇ 4! 1 was determined and averaged.
- the electrical resistance was measured using a Pt plate with a thickness of 1 mm and a thigh angle of 20 thighs and a sample of 20 samples with oxidation resistance (20 mm angle, plate thickness: lmm and 5 thighs).
- a Pt wire for current application and ® measurement was joined to the furnace, and was further placed in a furnace at 800 ° C for 1 hour under a load of 0.2 MPa, and the voltage when a current of 1.2 A was passed was measured.
- the electrical resistance area resistivity was determined by multiplying the measured resistance by the sample area of 4 cm 2 . Three samples were measured for each sample and averaged.
- One or more of the range powers selected from Hf are within the scope of the present invention, and are obtained by combining Mo and Nb with an Fe-Cr alloy ⁇ ) B No. 2 to No. 12 and No. 36 to No. 47 As shown in Table 3, the amount of Fe, Cr, and Si contained in the precipitates in the metal material before the oxidation resistance test was as shown in Table 3. lift The following equation (2) is satisfied for the metal material,
- the Fe content, the Cr content, and the Si content in the precipitates satisfied both Eqs. (1) below for the Lanchi metal material.
- the amount of oxidation increase is small in each case, and the effect of improving the oxidation resistance by the combined addition of Mo and Nb is remarkable.
- the generated oxide is mainly composed of Cr 2 O 3 , and it is expected that the performance of the 3 ⁇ 4 ⁇ used as the interconnector is small.
- Table 2 No. 2 to No. 12 No. 36 to No. 47 a small amount of Sc, Y, La, By adding at least one selected from the group consisting of Ce, Pr, Nd, Pm, Sm, Zr and Hf, the releasability of the oxide film was significantly improved.
- At least one selected from the group consisting of C, Si, Mn, Cr, Mo, Nb and Sc, Y, La, Ce, Pr, Nd, Pro, Sm, Zr, and Hf is free of additives. If the power or its range is out of the range of the present invention, it cannot be used as an interconnector as shown in the following example.
- No. 33 and No. 34 are respectively; No. 5 in Table 2 of JP-A No. 9-1570781 of ⁇ » ⁇ ! And JP-A No. 10-280103 A similar test was performed for No. 3 in Table 1 above, but the electrical resistance was extremely high due to the high growth rate of the oxide film.
- Mn suppresses peeling of oxide, for fast sickle wisteria Cr 2 0 3 film in, produces an oxide in the surface layer. Therefore, when the amount of Mn is large, as in the materials of Nos. 26 and 51, the oxide film becomes too thick, which adversely affects the electric resistance. Also, as in the materials of No. 29 and No. 54, the excess Mo port only deteriorates the workability and is inferior to the frit ripening property and has little effect on the oxidation resistance. The same applies to ⁇ (No. 30, No. 55) of Nb. If the condition of O.l ⁇ Mo / Nb ⁇ 30 is not satisfied (No. 31, No. 32, No. 56, No. 57), the precipitation amount is small and the effect of improving oxidation resistance is small. .
- Example 2 The properties of the cold-rolled sheet of No. 5 in Table 1 in Example 1 described above and the sheet obtained in Example 2 were subjected to precipitation treatment at 800 ° C. for 10 hours.
- oxidation resistance '14' ⁇ ⁇ [precipitated Fe] + [precipitated Cr] before and after the test + [Deposited Si]
- thermal expansion number, and electrical resistance measurement were as follows: No. 5 cold-rolled annealed sheet: oxidation resistance test: 1.7 g / m 2 , oxidation resistance: Fiber test: 64.
- An interconnector was made using the cold-rolled sheet No. 2 in Table 1 of Example 1 above.
- the fuel cell power generation characteristics (lower output voltage) were investigated using a single-cell test device shown in Fig. 3.
- the power generation characteristics were evaluated by measuring the mass ratio of NiO powder and YSZ powder to NiO and YSZ on one of the 0.2 thigh and 105 thigh square plates made of sintered yttria-stabilized zirconia (YSZ).
- the interconnectors that make up a single cell are 10-groove, 5-lambda-wide grooves for gas flow with a depth of 0.5 ram, cut into llam, 105 thigh square cold-rolled annealed plates at 5 mm intervals.
- Xiao U processed and placed on both sides of the electrolyte- «3 ⁇ 4 joint.
- a complex addition of Mo and Nb is added to the Fe—Cr alloy, and further, Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Zr and Hf are added.
- a solid oxide material having excellent oxidation resistance can be obtained as a metal material for an inter-connector of a fuel cell. Further, the growth of the oxide film at a high temperature can be prevented, and peeling can be effectively prevented.
- the metal material of the present invention for the interconnector of a solid oxide fuel cell it is possible to suppress the deterioration of the cell performance even at a high temperature for a long time and to reduce the cost of the fuel cell. This will greatly contribute to the practical use and size of fuel.
- a negative value of the increase in oxidation is due to peeling of the film.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03784571A EP1536031A4 (en) | 2002-08-09 | 2003-08-07 | METAL MATERIAL FOR FUEL CELL, FUEL CELL IN WHICH THIS MATERIAL IS USED, AND METHOD FOR PRODUCING THE MATERIAL |
| CA2478660A CA2478660C (en) | 2002-08-09 | 2003-08-07 | Metallic material for fuel cells, fuel cell using the same and method for producing the material |
| US10/509,469 US7531053B2 (en) | 2002-08-09 | 2003-08-07 | Fuel cell produced using a metallic material and its method of making |
| KR1020047016435A KR100858572B1 (ko) | 2002-08-09 | 2003-08-07 | 연료전지용 금속재료, 그것을 사용한 연료전지 및, 그재료의 제조방법 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002232367 | 2002-08-09 | ||
| JP2002-232367 | 2002-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004015156A1 true WO2004015156A1 (ja) | 2004-02-19 |
Family
ID=31711827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/010060 Ceased WO2004015156A1 (ja) | 2002-08-09 | 2003-08-07 | 燃料電池用金属材料、それを用いた燃料電池および、その材料の製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7531053B2 (ja) |
| EP (1) | EP1536031A4 (ja) |
| KR (1) | KR100858572B1 (ja) |
| CA (1) | CA2478660C (ja) |
| WO (1) | WO2004015156A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005264298A (ja) * | 2004-03-22 | 2005-09-29 | Jfe Steel Kk | 燃料電池用金属材料および固体酸化物型燃料電池 |
| EP1600520A1 (en) | 2004-05-19 | 2005-11-30 | Sandvik Intellectual Property AB | Heat-resistant steel |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7842434B2 (en) * | 2005-06-15 | 2010-11-30 | Ati Properties, Inc. | Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells |
| US7981561B2 (en) * | 2005-06-15 | 2011-07-19 | Ati Properties, Inc. | Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells |
| CA2604593C (en) * | 2005-06-15 | 2014-04-08 | Ati Properties, Inc. | Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells |
| US8158057B2 (en) * | 2005-06-15 | 2012-04-17 | Ati Properties, Inc. | Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells |
| AU2011244954B2 (en) * | 2005-06-15 | 2014-01-16 | Ati Properties, Inc. | Interconnects for solid oxide fuel cells and ferritic stainless steels adapted for use with solid oxide fuel cells |
| DE102006007598A1 (de) * | 2006-02-18 | 2007-08-30 | Forschungszentrum Jülich GmbH | Kriechfester ferritischer Stahl |
| WO2008013498A1 (en) * | 2006-07-26 | 2008-01-31 | Sandvik Intellectual Property Ab | Ferritic chromium steel |
| EP1882756B1 (en) * | 2006-07-26 | 2012-01-11 | Sandvik Intellectual Property AB | Ferritic chromium steel |
| CN101503780B (zh) * | 2009-03-27 | 2011-01-05 | 钢铁研究总院 | 一种中温平板式固体氧化物燃料电池金属连接体用铁基膨胀合金 |
| PL213349B1 (pl) | 2009-07-17 | 2013-02-28 | Akad Gorniczo Hutnicza | Sposób wykonania elektrochemicznego konwertera energii i elektrochemiczny konwerter energii |
| DE102009039552B4 (de) | 2009-09-01 | 2011-05-26 | Thyssenkrupp Vdm Gmbh | Verfahren zur Herstellung einer Eisen-Chrom-Legierung |
| JP5552284B2 (ja) * | 2009-09-14 | 2014-07-16 | 信越化学工業株式会社 | 多結晶シリコン製造システム、多結晶シリコン製造装置および多結晶シリコンの製造方法 |
| DE202011106778U1 (de) | 2011-06-21 | 2011-12-05 | Thyssenkrupp Vdm Gmbh | Hitzebeständige Eisen-Chrom-Aluminium-Legierung mit geringer Chromverdampfungsrate und erhöhter Warmfestigkeit |
| DE102012004488A1 (de) | 2011-06-21 | 2012-12-27 | Thyssenkrupp Vdm Gmbh | Hitzebeständige Eisen-Chrom-Aluminium-Legierung mit geringer Chromverdampfungsrate und erhöhter Warmfestigkeit |
| PL220309B1 (pl) | 2012-10-20 | 2015-10-30 | Akademia Górniczo Hutnicza Im Stanisława Staszica W Krakowie | Bateria ogniw paliwowych |
| US20140178795A1 (en) * | 2012-12-24 | 2014-06-26 | Samsung Electro-Mechanics Co., Ltd. | Solid oxide fuel cell and method of manufacturing interconnector for solid oxide fuel cell |
| US9958406B1 (en) * | 2013-12-06 | 2018-05-01 | Bloom Energy Corporation | Method of measurement and estimation of the coefficient of thermal expansion in components |
| US9993874B2 (en) | 2014-02-25 | 2018-06-12 | Bloom Energy Corporation | Composition and processing of metallic interconnects for SOFC stacks |
| RU2556888C1 (ru) * | 2014-06-09 | 2015-07-20 | Федеральное государственное бюджетное учреждение "Национальный исследовательский центр "Курчатовский институт" | Электрохимический преобразователь энергии |
| CN104733657A (zh) * | 2015-03-31 | 2015-06-24 | 昆山艾可芬能源科技有限公司 | 一种固体氧化物燃料电池堆用密封材料 |
| KR101952806B1 (ko) * | 2017-08-31 | 2019-02-28 | 주식회사포스코 | 금속지지체형 고체산화물 연료전지 및 그 제조방법 |
| US11417903B2 (en) * | 2019-11-29 | 2022-08-16 | Nissan North America, Inc. | Electrode-based reformer for solid oxide electrochemical devices |
| DE102021209890A1 (de) | 2021-09-08 | 2023-03-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kriechfester Stahl |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09157801A (ja) * | 1995-10-05 | 1997-06-17 | Hitachi Metals Ltd | 固体電解質型燃料電池セパレーター用鋼 |
| JPH10237600A (ja) * | 1997-02-27 | 1998-09-08 | Sumitomo Metal Ind Ltd | 耐高温溶接割れ性および溶接熱影響部の靭性に優れるフェライト系耐熱鋼 |
| JPH10280103A (ja) * | 1997-04-08 | 1998-10-20 | Hitachi Metals Ltd | 固体電解質型燃料電池セパレータ用鋼 |
| AT4810U1 (de) * | 2001-05-31 | 2001-11-26 | Plansee Ag | Stromsammler für sofc-brennstoffzellen |
| EP1176220A1 (en) * | 2000-07-25 | 2002-01-30 | Kawasaki Steel Corporation | Ferritic stainless steel sheet having superior workability at room temperatures and mechanical characteristics at high temperatures, and method of producing the same |
| EP1207214A2 (en) * | 2000-11-15 | 2002-05-22 | Kawasaki Steel Corporation | Soft Cr-containing steel |
| WO2003048402A1 (en) * | 2001-11-30 | 2003-06-12 | Ati Properties, Inc. | Ferritic stainless steel having high temperature creep resistance |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010049A (en) | 1975-10-06 | 1977-03-01 | Jones & Laughlin Steel Corporation | Columbium-stabilized high chromium ferritic stainless steels containing zirconium |
| JP2803538B2 (ja) * | 1993-11-22 | 1998-09-24 | 住友金属工業株式会社 | 自動車排気マニホールド用フェライト系ステンレス鋼 |
| JP3427502B2 (ja) * | 1994-08-22 | 2003-07-22 | 住友金属工業株式会社 | 自動車排気系部材用フェライトステンレス鋼 |
| JPH08127847A (ja) | 1994-10-28 | 1996-05-21 | Nippon Steel Corp | 静粛性の優れた部品およびその製造方法 |
| JP3152576B2 (ja) * | 1995-01-19 | 2001-04-03 | 川崎製鉄株式会社 | Nb含有フェライト鋼板の製造方法 |
| JPH10251808A (ja) | 1997-03-11 | 1998-09-22 | Sanyo Special Steel Co Ltd | 冷・温間鍛造性、耐き裂性に優れた予燃焼室式ディーゼルエンジンインサート用フェライト系ステンレス鋼 |
| JP3020924B1 (ja) | 1998-09-25 | 2000-03-15 | 株式会社日立製作所 | 高強度高耐食性フェライト鋼の製造方法 |
| JP4622171B2 (ja) * | 2000-07-25 | 2011-02-02 | Jfeスチール株式会社 | 常温加工性および高温での機械特性に優れたフェライト系ステンレス鋼板およびその製造方法 |
-
2003
- 2003-08-07 EP EP03784571A patent/EP1536031A4/en not_active Ceased
- 2003-08-07 US US10/509,469 patent/US7531053B2/en not_active Expired - Lifetime
- 2003-08-07 WO PCT/JP2003/010060 patent/WO2004015156A1/ja not_active Ceased
- 2003-08-07 KR KR1020047016435A patent/KR100858572B1/ko not_active Expired - Lifetime
- 2003-08-07 CA CA2478660A patent/CA2478660C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09157801A (ja) * | 1995-10-05 | 1997-06-17 | Hitachi Metals Ltd | 固体電解質型燃料電池セパレーター用鋼 |
| JPH10237600A (ja) * | 1997-02-27 | 1998-09-08 | Sumitomo Metal Ind Ltd | 耐高温溶接割れ性および溶接熱影響部の靭性に優れるフェライト系耐熱鋼 |
| JPH10280103A (ja) * | 1997-04-08 | 1998-10-20 | Hitachi Metals Ltd | 固体電解質型燃料電池セパレータ用鋼 |
| EP1176220A1 (en) * | 2000-07-25 | 2002-01-30 | Kawasaki Steel Corporation | Ferritic stainless steel sheet having superior workability at room temperatures and mechanical characteristics at high temperatures, and method of producing the same |
| EP1207214A2 (en) * | 2000-11-15 | 2002-05-22 | Kawasaki Steel Corporation | Soft Cr-containing steel |
| AT4810U1 (de) * | 2001-05-31 | 2001-11-26 | Plansee Ag | Stromsammler für sofc-brennstoffzellen |
| WO2003048402A1 (en) * | 2001-11-30 | 2003-06-12 | Ati Properties, Inc. | Ferritic stainless steel having high temperature creep resistance |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1536031A4 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005264298A (ja) * | 2004-03-22 | 2005-09-29 | Jfe Steel Kk | 燃料電池用金属材料および固体酸化物型燃料電池 |
| EP1600520A1 (en) | 2004-05-19 | 2005-11-30 | Sandvik Intellectual Property AB | Heat-resistant steel |
| CN100545293C (zh) * | 2004-05-19 | 2009-09-30 | 山特维克知识产权股份有限公司 | 耐热钢 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2478660A1 (en) | 2004-02-19 |
| KR20040101483A (ko) | 2004-12-02 |
| CA2478660C (en) | 2014-03-18 |
| US7531053B2 (en) | 2009-05-12 |
| US20050076976A1 (en) | 2005-04-14 |
| EP1536031A1 (en) | 2005-06-01 |
| KR100858572B1 (ko) | 2008-09-17 |
| EP1536031A4 (en) | 2005-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2004015156A1 (ja) | 燃料電池用金属材料、それを用いた燃料電池および、その材料の製造方法 | |
| KR102809394B1 (ko) | 고체 산화물형 연료 전지용 페라이트계 스테인리스강 | |
| KR20130034051A (ko) | 고체 산화물 연료 전지용 인터커넥트 및 상기 고체 산화물 연료 전지용 인터커넥트로서 사용되기에 적합한 페라이트 스테인리스강 | |
| JP5152193B2 (ja) | 固体高分子型燃料電池セパレータ用ステンレス鋼材および固体高分子型燃料電池 | |
| JP3097690B1 (ja) | 固体高分子型燃料電池 | |
| JP2000294255A (ja) | 固体高分子型燃料電池 | |
| WO2005035816A1 (ja) | 固体高分子型燃料電池セパレータ用ステンレス鋼およびそのステンレス鋼を用いた固体高分子型燃料電池 | |
| JP4930222B2 (ja) | 固体高分子形燃料電池セパレータ用オーステナイト系ステンレス鋼およびそれを用いた固体高分子形燃料電池 | |
| JP4259225B2 (ja) | 燃料電池用金属材料および固体酸化物型燃料電池 | |
| JP4214921B2 (ja) | 燃料電池用Fe−Cr系合金 | |
| JP4967831B2 (ja) | 固体高分子形燃料電池セパレータ用フェライト系ステンレス鋼およびそれを用いた固体高分子形燃料電池 | |
| JP5217755B2 (ja) | 燃料電池セパレータ用ステンレス鋼および燃料電池用セパレータ | |
| JP2005264298A (ja) | 燃料電池用金属材料および固体酸化物型燃料電池 | |
| JP5560533B2 (ja) | 固体高分子形燃料電池セパレータ用ステンレス鋼およびそれを用いた固体高分子形燃料電池 | |
| JP2005220416A (ja) | 燃料電池用金属材料および固体酸化物型燃料電池 | |
| JP4385328B2 (ja) | 固体酸化物型燃料電池セパレータ用鋼 | |
| JP7740602B1 (ja) | 固体酸化物型電気化学セル用フェライト系ステンレス鋼 | |
| JP2005264299A (ja) | 燃料電池用金属材料および固体酸化物型燃料電池 | |
| EP4715079A1 (en) | Ferritic stainless steel for solid oxide electrochemical cells | |
| WO2025243583A1 (ja) | 固体酸化物型電気化学セル用フェライト系ステンレス鋼 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA KR US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 2478660 Country of ref document: CA |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2003784571 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 10509469 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1020047016435 Country of ref document: KR |
|
| WWP | Wipo information: published in national office |
Ref document number: 1020047016435 Country of ref document: KR |
|
| WWP | Wipo information: published in national office |
Ref document number: 2003784571 Country of ref document: EP |

