EP0223083A1 - Procédé pour la fabrication d'un revêtement protecteur résistant à de hautes températures - Google Patents

Procédé pour la fabrication d'un revêtement protecteur résistant à de hautes températures Download PDF

Info

Publication number: EP0223083A1
Authority: EP; European Patent Office
Prior art keywords: metal; component; base body; protective layer; temperature protective
Prior art date: 1985-11-02
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

Application number

EP86114481A

Other languages

German (de)

English (en)

Inventor

Josef Dr. Rohr

Wing Fong Dr. Chu

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

ASEA BROWN BOVERI AKTIENGESELLSCHAFT

Original Assignee

BBC Brown Boveri AG Switzerland

Asea Brown Boveri AG Germany

Priority date (The priority date 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 date listed.)

1985-11-02

Filing date

1986-10-18

Publication date

1987-05-27

1986-10-18 Application filed by BBC Brown Boveri AG Switzerland, Asea Brown Boveri AG Germany filed Critical BBC Brown Boveri AG Switzerland

1987-05-27 Publication of EP0223083A1 publication Critical patent/EP0223083A1/fr

Status Ceased legal-status Critical Current

Links

238000004519 manufacturing process Methods 0.000 title claims abstract description 9
238000000034 method Methods 0.000 title claims description 12
239000011253 protective coating Substances 0.000 title 1
229910052751 metal Inorganic materials 0.000 claims abstract description 42
239000002184 metal Substances 0.000 claims abstract description 42
239000011241 protective layer Substances 0.000 claims abstract description 32
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 8
229910052804 chromium Inorganic materials 0.000 claims abstract description 8
239000011651 chromium Substances 0.000 claims abstract description 8
229910052746 lanthanum Inorganic materials 0.000 claims abstract description 7
FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims abstract description 7
229910052712 strontium Inorganic materials 0.000 claims abstract description 7
CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 7
230000000737 periodic effect Effects 0.000 claims abstract description 4
229910052729 chemical element Inorganic materials 0.000 claims abstract description 3
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
229910052760 oxygen Inorganic materials 0.000 claims description 14
239000001301 oxygen Substances 0.000 claims description 14
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
239000000843 powder Substances 0.000 claims description 10
239000007789 gas Substances 0.000 claims description 8
239000000463 material Substances 0.000 claims description 8
229910045601 alloy Inorganic materials 0.000 claims description 7
239000000956 alloy Substances 0.000 claims description 7
238000010438 heat treatment Methods 0.000 claims description 7
150000002902 organometallic compounds Chemical class 0.000 claims description 7
150000001875 compounds Chemical class 0.000 claims description 6
150000002739 metals Chemical class 0.000 claims description 6
239000000725 suspension Substances 0.000 claims description 6
229910017052 cobalt Inorganic materials 0.000 claims description 5
239000010941 cobalt Substances 0.000 claims description 5
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
229910052742 iron Inorganic materials 0.000 claims description 5
229910052759 nickel Inorganic materials 0.000 claims description 5
150000003839 salts Chemical class 0.000 claims description 5
239000012159 carrier gas Substances 0.000 claims description 4
229910044991 metal oxide Inorganic materials 0.000 claims description 4
150000004706 metal oxides Chemical class 0.000 claims description 4
239000000126 substance Substances 0.000 claims description 4
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
229910052748 manganese Inorganic materials 0.000 claims description 3
239000011572 manganese Substances 0.000 claims description 3
-1 oxyhalides Chemical class 0.000 claims description 3
238000007750 plasma spraying Methods 0.000 claims description 3
150000004649 carbonic acid derivatives Chemical class 0.000 claims description 2
125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 2
239000007795 chemical reaction product Substances 0.000 claims description 2
238000001962 electrophoresis Methods 0.000 claims description 2
238000010285 flame spraying Methods 0.000 claims description 2
150000004820 halides Chemical class 0.000 claims description 2
150000004678 hydrides Chemical class 0.000 claims description 2
230000007717 exclusion Effects 0.000 claims 1
230000004907 flux Effects 0.000 claims 1
238000005245 sintering Methods 0.000 claims 1
238000007740 vapor deposition Methods 0.000 claims 1
239000000203 mixture Substances 0.000 abstract description 2
239000000470 constituent Substances 0.000 abstract 1
239000002585 base Substances 0.000 description 15
238000006243 chemical reaction Methods 0.000 description 4
XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
229910002651 NO3 Inorganic materials 0.000 description 2
229910010293 ceramic material Inorganic materials 0.000 description 2
230000000694 effects Effects 0.000 description 2
229910052720 vanadium Inorganic materials 0.000 description 2
GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 2
NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
239000000020 Nitrocellulose Substances 0.000 description 1
229910000831 Steel Inorganic materials 0.000 description 1
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
238000009825 accumulation Methods 0.000 description 1
239000000853 adhesive Substances 0.000 description 1
230000001070 adhesive effect Effects 0.000 description 1
150000001447 alkali salts Chemical class 0.000 description 1
229940072049 amyl acetate Drugs 0.000 description 1
PGMYKACGEOXYJE-UHFFFAOYSA-N anhydrous amyl acetate Natural products CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 description 1
229910052786 argon Inorganic materials 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
239000000919 ceramic Substances 0.000 description 1
239000011248 coating agent Substances 0.000 description 1
238000000576 coating method Methods 0.000 description 1
239000002826 coolant Substances 0.000 description 1
238000005260 corrosion Methods 0.000 description 1
230000007797 corrosion Effects 0.000 description 1
238000000354 decomposition reaction Methods 0.000 description 1
238000009792 diffusion process Methods 0.000 description 1
230000003628 erosive effect Effects 0.000 description 1
238000001704 evaporation Methods 0.000 description 1
229910052736 halogen Inorganic materials 0.000 description 1
150000002367 halogens Chemical class 0.000 description 1
MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 description 1
230000003993 interaction Effects 0.000 description 1
229920001220 nitrocellulos Polymers 0.000 description 1
229910052757 nitrogen Inorganic materials 0.000 description 1
230000003647 oxidation Effects 0.000 description 1
238000007254 oxidation reaction Methods 0.000 description 1
239000000047 product Substances 0.000 description 1
230000035939 shock Effects 0.000 description 1
238000003746 solid phase reaction Methods 0.000 description 1
238000010671 solid-state reaction Methods 0.000 description 1
239000007858 starting material Substances 0.000 description 1
239000010959 steel Substances 0.000 description 1
229910052717 sulfur Inorganic materials 0.000 description 1
239000011593 sulfur Substances 0.000 description 1

Images

Classifications

- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
- C23C4/11—Oxides

Definitions

the invention relates to a high-temperature protective layer according to the preamble of claim 1 and to a method for its production.
Such high-temperature protective layers are used above all where the base material of components made of heat-resistant steels and / or alloys that are used at temperatures above 600 ° C has to be protected.
the high-temperature protective layer is intended to slow down the effects of high-temperature corrosion, especially of sulfur-oil ash, oxygen, alkaline earths and vanadium.
the high-temperature protective layers are applied directly to the basic material of the components.
High-temperature protective layers are of particular importance for components of gas turbines. They are mainly applied to rotor blades and guide vanes, as well as to heat accumulation segments in gas turbines.
An austenitic material based on nickel, cobalt or iron is preferably used for the production of the components.
the invention has for its object a method for producing a high-temperature protective layer and to show such a high-temperature protective layer itself, which is particularly resistant to corrosive components of hot gases and which also adheres particularly well and permanently to the surface of metallic components.
Mixed oxides with a perovskite structure such as those used to form the high-temperature protective layer according to the invention, occupy a position between the pure metals or alloys on the one hand and ceramic materials on the other.
the density of these mixed oxides is relatively high, similar to that of metals. Their hardness exceeds that of metals and can be compared to ceramic materials. The same applies to their mechanical strength.
the thermodynamic and chemical stability of these mixed oxides and their phase stability even exceeds that of other high-temperature materials over a wide temperature range.
the coefficient of expansion of mixed oxides is between that of metals and ceramics.
the high-temperature protective layer according to the invention also has the property that it is resistant to sulfur, halogens, vanadium and their compounds and to alkali salts and metal oxides. Furthermore, it has a very good adhesive strength on metallic components, which is also durable. It has the necessary mechanical strength and the necessary resistance to erosion. It is also characterized by sufficient gas tightness and very good thermal shock strength in the application temperature range
the only figure in the application shows the component 1 of a gas turbine in a vertical section, which constantly comes into contact with hot gases.
the component 1 has a base body 2, which in the exemplary embodiment shown here is made of an austenitic material based on nickel, iron or cobalt.
the base body 2 is penetrated by channels 3 through which a coolant can be passed.
the high-temperature protective layer 4 according to the invention is applied in a thickness of 100 ⁇ m to the surface of the base body 2. According to the invention, the high-temperature protective layer 4 can be applied directly to the surface of the cleaned base body 2.
the high-temperature protective layer is formed by a mixed oxide that has a perovskite structure with the general composition:
A stands for a metal from the third subgroup
B for a metal from the second main group
M for a metal from VI., VII. or VIII.
Subgroup of the Periodic Table of the Elements According to the chemical equation below, the oxides or carbonates of these metals are mixed, ground, pressed and sintered to produce a suitable powder.
the reaction product is then processed into an injectable powder.
SrC0 3 can also be used.
the product of the solid-state reaction is ground in a vibratory mill to a powder with a grain size of 0.1 to 60 ⁇ m.
the high-temperature protective layer 4 should have a thickness of approximately 100 ⁇ m.
the material forming the high-temperature protective layer 4 can also be applied to the upper as a suspension when using very fine sinter-active powder with a grain size between 0.1 and 10 ⁇ m surface of the base body 2 sprayed on or applied from the suspension by electrophoresis and then baked to 800 to 1200 ° C. by subsequent heating of the component.
a film former for example nitrocellulose amyl acetate, can be added to the suspension.
the starting materials of the mixed oxide used to produce the high-temperature protective layer are passed as gaseous reactive compounds together with an oxygen-containing carrier gas over the heated surface of the component to be coated.
these gaseous compounds are reacted by interaction with the material of the component.
the mixed oxide to be formed should again have at least one metal from the third subgroup, one metal from the second main group and one metal from the sixth, seventh or eighth subgroup of the periodic table of the chemical elements.
the mixed oxide should also have the general structural formula A 1-x B X MO 3 .
Halides, oxyhalides, hydrides, carbonyls or organometallic compounds are preferably used as gaseous compounds for forming the mixed oxide with a perovskite structure.
Lanthanum is preferably used as metal A, strontium as metal B and chromium as metal M to form the high-temperature protective layer.
Nitrogen or argon with 0 2 is used as the carrier gas containing oxygen.
Oxygen-containing reaction substances, such as 0 2 air or H 2 0, can additionally be mixed into the gaseous reactive compounds.
Another possibility of producing the high-temperature protective layer 4 according to the invention is that to produce component 1 to be coated from such an alloy, which already contains the metallic components A, B and M, which are required to form the mixed oxide, in corresponding molar ratios.
the base body 2 of the component 1 to be provided with the high-temperature protective layer 4 is made of an alloy which contains lanthanum, strontium and chromium in the required amount, then heat treatment of the base body 2 in an oxygen-containing atmosphere can result in these being metallic Components diffuse to the surface and react with the oxygen in such a way that a high-temperature protective layer 4 is formed from the desired mixed oxide, which has a perovskite structure.
the high-temperature protective layer 4 on the base body 2 can be brought about by evaporating or diffusing the necessary metallic components onto the surface of the base body 2 after its completion. Subsequent heat treatment in an oxygen-containing atmosphere can also produce the desired high-temperature protective layer consisting of the mixed oxide with a perovskite structure.
the component 1 to be coated already contains the metal component M in the form of a component of iron, cobalt, nickel, manganese or chromium in its base body 2.
components A and B which are additionally required for the formation of the mixed oxide, only have to be introduced into the base body and have to be reacted with the metal component M by diffusion or oxidation processes at elevated temperature.
Another method for coating the component can be used if the base body 2 of the component 1 already contains the metal component M as an alloy component in its surface.
the surface of the base body 2 is treated with a solution consisting of a salt or organometallic compound of the two metal components A and B.
a nitrate solution which contains the two metal components A and B.
the component 1 is heated to the decomposition temperature of the salt or organometallic compound or the nitrate compound. The whole thing happens under the influence of oxygen. Due to the effect of temperature, the metal component M contained in the surface of the component 1 reacts with the metal components A and B applied to the surface.
the desired mixed oxide with a perovskite structure is formed. The reactions taking place are shown in the following equation:

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Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Plasma & Fusion (AREA)
Chemical Kinetics & Catalysis (AREA)
Materials Engineering (AREA)
Physics & Mathematics (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Other Surface Treatments For Metallic Materials (AREA)
Inorganic Compounds Of Heavy Metals (AREA)
Chemical Vapour Deposition (AREA)
Coating By Spraying Or Casting (AREA)
Catalysts (AREA)

EP86114481A 1985-11-02 1986-10-18 Procédé pour la fabrication d'un revêtement protecteur résistant à de hautes températures Ceased EP0223083A1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3539029		1985-11-02
DE19853539029 DE3539029A1 (de)	1985-11-02	1985-11-02	Hochtemperatur-schutzschicht und verfahren zu ihrer herstellung

Publications (1)

Publication Number	Publication Date
EP0223083A1 true EP0223083A1 (fr)	1987-05-27

Family

ID=6285103

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP86114481A Ceased EP0223083A1 (fr)	1985-11-02	1986-10-18	Procédé pour la fabrication d'un revêtement protecteur résistant à de hautes températures

Country Status (4)

Country	Link
US (1)	US4971839A (fr)
EP (1)	EP0223083A1 (fr)
JP (1)	JPS62112788A (fr)
DE (1)	DE3539029A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0286135A3 (fr) *	1987-04-10	1990-12-19	Sumitomo Electric Industries Limited	Procédé pour la fabrication d'une céramique d'oxyde supraconducteur
EP0497542A1 (fr) *	1991-01-28	1992-08-05	Ngk Insulators, Ltd.	Méthode de production d'un film en chromite de lanthane et méthode de production d'une interconnection pour piles à combustible à électrolyte solide
WO1999023271A1 (fr) *	1997-11-03	1999-05-14	Siemens Aktiengesellschaft	Produit, en particulier composant d'une turbine a gaz, a couche thermo-isolante en ceramique
US6416882B1 (en)	1997-11-03	2002-07-09	Siemens Aktiengesellschaft	Protective layer system for gas turbine engine component
EP1367148A1 (fr) *	2002-05-13	2003-12-03	Siemens Westinghouse Power Corporation	Barrière thermique abradable et procédé de préparation

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE4242099A1 (de) *	1992-12-14	1994-06-16	Abb Patent Gmbh	Vorrichtung, insbesondere Gasturbineneinrichtung, mit einer Beschichtung von Einrichtungsteilen
JP3943139B2 (ja) *	1996-12-10	2007-07-11	シーメンスアクチエンゲゼルシヤフト	高温ガスに曝される製品ならびにその製造方法
US6117560A (en) *	1996-12-12	2000-09-12	United Technologies Corporation	Thermal barrier coating systems and materials
JP4218744B2 (ja) *	1998-09-10	2009-02-04	日鉄ハード株式会社	溶射材料およびそれを溶射して形成した皮膜を有する部材
DE10204812A1 (de) *	2002-02-06	2003-08-14	Man B & W Diesel As Kopenhagen	Motor
US7422671B2 (en) *	2004-08-09	2008-09-09	United Technologies Corporation	Non-line-of-sight process for coating complexed shaped structures
JP2014156396A (ja) *	2014-05-07	2014-08-28	Mitsubishi Heavy Ind Ltd	遮熱コーティング材料、並びにガスタービン用翼、燃焼器、ガスタービン、及びジェットエンジン

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DE2758618A1 (de) *	1976-12-30	1978-07-06	Union Carbide Corp	Hochtemperaturbestaendige, abriebfeste ueberzugszusammensetzung
EP0061322A2 (fr) *	1981-03-23	1982-09-29	Hitachi, Ltd.	Structure métallique revêtue par un alliage et ayant une excellente résistance à la corrosion à haute temperature et au choc thermique
EP0134821A1 (fr) *	1983-07-22	1985-03-27	BBC Aktiengesellschaft Brown, Boveri & Cie.	Revêtement protecteur à haute température

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US3610888A (en) *	1970-01-30	1971-10-05	Westinghouse Electric Corp	Oxide resistor heating element
CH594292A5 (fr) *	1974-11-19	1978-01-13	Raffinage Cie Francaise
JPS51150692A (en) *	1975-06-20	1976-12-24	Arita Kosei	High conductivity composed substance
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GB1577364A (en) *	1976-02-18	1980-10-22	Ford Motor Co	Method for producing high strength polycrystalline titanium dioxide ceramic member
US4186072A (en) *	1976-06-28	1980-01-29	Blumenthal Robert N	Hot gas measuring device
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JPS5571666A (en) *	1978-11-22	1980-05-29	Tokai Rika Co Ltd	Preparing highly conductive sintered body
US4339511A (en) *	1979-11-30	1982-07-13	The United States Of America As Represented By The United States Department Of Energy	Preparation of powders suitable for conversion to useful β-aluminas
JPS6054259B2 (ja) *	1980-12-22	1985-11-29	株式会社村田製作所	感湿セラミツク
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1985
- 1985-11-02 DE DE19853539029 patent/DE3539029A1/de not_active Withdrawn
1986
- 1986-10-18 EP EP86114481A patent/EP0223083A1/fr not_active Ceased
- 1986-10-29 JP JP61255964A patent/JPS62112788A/ja active Pending
1988
- 1988-10-06 US US07/256,072 patent/US4971839A/en not_active Expired - Fee Related

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Publication number	Priority date	Publication date	Assignee	Title
DE2758618A1 (de) *	1976-12-30	1978-07-06	Union Carbide Corp	Hochtemperaturbestaendige, abriebfeste ueberzugszusammensetzung
EP0061322A2 (fr) *	1981-03-23	1982-09-29	Hitachi, Ltd.	Structure métallique revêtue par un alliage et ayant une excellente résistance à la corrosion à haute temperature et au choc thermique
EP0134821A1 (fr) *	1983-07-22	1985-03-27	BBC Aktiengesellschaft Brown, Boveri & Cie.	Revêtement protecteur à haute température

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, unexamined applications, Field C, Vol. 8, Nr. 71, 3. April 1984 THE PATENT OFFICE JAPANESE GOVERNMENT Seite 66 C 217 * JP - A - 58-223 618 ( SUMITOMO ) * *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0286135A3 (fr) *	1987-04-10	1990-12-19	Sumitomo Electric Industries Limited	Procédé pour la fabrication d'une céramique d'oxyde supraconducteur
EP0497542A1 (fr) *	1991-01-28	1992-08-05	Ngk Insulators, Ltd.	Méthode de production d'un film en chromite de lanthane et méthode de production d'une interconnection pour piles à combustible à électrolyte solide
US5397657A (en) *	1991-01-28	1995-03-14	Ngk Insulators, Ltd.	Method for increasing the electrical conductivity of a thermal sprayed interconnector for a solid electrolyte fuel cell
US6835465B2 (en)	1996-12-10	2004-12-28	Siemens Westinghouse Power Corporation	Thermal barrier layer and process for producing the same
WO1999023271A1 (fr) *	1997-11-03	1999-05-14	Siemens Aktiengesellschaft	Produit, en particulier composant d'une turbine a gaz, a couche thermo-isolante en ceramique
US6416882B1 (en)	1997-11-03	2002-07-09	Siemens Aktiengesellschaft	Protective layer system for gas turbine engine component
US6440575B1 (en)	1997-11-03	2002-08-27	Siemens Aktiengesellschaft	Ceramic thermal barrier layer for gas turbine engine component
US6602553B2 (en)	1997-11-03	2003-08-05	Siemens Aktiengesellshaft	Process for producing a ceramic thermal barrier layer for gas turbine engine component
EP1367148A1 (fr) *	2002-05-13	2003-12-03	Siemens Westinghouse Power Corporation	Barrière thermique abradable et procédé de préparation

Also Published As

Publication number	Publication date
JPS62112788A (ja)	1987-05-23
US4971839A (en)	1990-11-20
DE3539029A1 (de)	1987-05-07

Legal Events

Date	Code	Title	Description
1987-04-11	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1987-05-27	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): CH DE LI NL
1987-11-19	17P	Request for examination filed	Effective date: 19870924
1988-09-28	17Q	First examination report despatched	Effective date: 19880812
1990-01-03	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: ASEA BROWN BOVERI AKTIENGESELLSCHAFT
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2007-08-08	RIN1	Information on inventor provided before grant (corrected)	Inventor name: ROHR, JOSEF, DR. Inventor name: CHU, WING FONG, DR.

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