WO2004015168A1 - 傾斜組成を有するセラミックス薄膜被覆材料及びその製造方法 - Google Patents
傾斜組成を有するセラミックス薄膜被覆材料及びその製造方法 Download PDFInfo
- Publication number
- WO2004015168A1 WO2004015168A1 PCT/JP2003/009981 JP0309981W WO2004015168A1 WO 2004015168 A1 WO2004015168 A1 WO 2004015168A1 JP 0309981 W JP0309981 W JP 0309981W WO 2004015168 A1 WO2004015168 A1 WO 2004015168A1
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- WO
- WIPO (PCT)
- Prior art keywords
- thin film
- ceramic
- phase
- coating material
- ceramic thin
- 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.)
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Classifications
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- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
Definitions
- the present invention relates to a ceramic thin film coating material having a gradient composition and a method for producing the same.
- the present invention has excellent functions such as a photocatalytic function, an electric function, a thermal catalytic function, and a catalyst supporting function, or has environmental resistance such as oxidation resistance, alkali resistance, and abrasion resistance, and excellent mechanical properties.
- TECHNICAL FIELD The present invention relates to a ceramic thin film coating material having a graded composition and a method for producing the same. More specifically, it consists of a first phase, which has excellent adhesion to the substrate, has no cracks or defects, and bears mechanical properties, and a surface layer, which bears various functions, and a second phase, which is a layer adjacent to it.
- TECHNICAL FIELD The present invention relates to a ceramic thin film coating material having a gradient composition and a method for producing the same. Background art
- a titania film is formed on a substrate surface.
- a sol-gel method and a binder method.
- This is a method in which a strong titaure film is formed by applying a spray or the like to the surface of a heat-resistant base material such as a spray, drying it to form a gel, and heating it to 500 ° C or more. Since the titania particles are present on the entire surface of the base material, a titania coating film having high resolving power and high hardness can be formed.
- the binder method is a method in which titania particles are fixed to the surface of a base material with a binder, and an inorganic material such as silica or an organic material such as silicone is used as the binder.
- heat treatment is performed to convert organic titanium such as titanium alkoxide and titanium chelate, which are precursors of titania, into a titania film. For this reason, heat treatment is performed at most at 500 to 700 ° C., and there is a problem that the adhesion between the titania film and the substrate is insufficient.
- sol-gel method has many problems in that the organic titanium is applied many times, which requires much labor, requires expensive equipment, is expensive, and generates harmful waste. there were.
- the binder method has a problem that the formed titania film has low hardness. This is because, in order to increase the hardness of the titania film formed by the binder method, it is sufficient to increase the adhesive force by increasing the number of the binders. In that case, however, the titania becomes relatively small with respect to the binder, and the decomposing power decreases. Conversely, when the binder is reduced, the titania exposed on the surface of the base material increases, so that the decomposition force increases. However, there is a problem in that the adhesive strength is reduced, the titania coating is easily peeled off, and the hardness is reduced.
- the surface must be coated with a ceramic material such as zirconia to provide environmental resistance such as oxidation resistance, alkali resistance, and abrasion resistance. Is being conducted.
- the present invention solves the above problems, has excellent adhesion to a substrate, has no cracks or defects, and has excellent functions such as a photocatalytic function, an electric function, a thermal catalytic function, and a catalyst supporting function, or It is an object of the present invention to provide a ceramic thin film coating material having a gradient composition that has environmental resistance such as oxidation resistance, alkali resistance, and abrasion resistance and has excellent mechanical characteristics, and a method for producing the same. Disclosure of the invention
- the present invention provides a base material comprising a composite phase of a first phase mainly composed of a silicon-based ceramic component and a second phase mainly composed of a ceramic component having a composition other than the first phase.
- the present invention relates to a ceramic thin film coating material having a gradient composition consisting of a ceramic thin film in which the abundance ratio of fine crystal grains of at least one type of ceramic component constituting the ceramic is gradually increased toward the surface layer. .
- the present invention provides a modified organosilicon polymer having a structure in which an organosilicon polymer is modified with an organometallic compound, or an organosilicon polymer or a mixture of the modified organosilicon polymer and an organometallic compound. Is coated on the surface of the base material, subjected to a predetermined heat treatment, and further fired in an oxidizing atmosphere, an inert atmosphere, or an atmosphere containing nitrogen.
- the present invention relates to a method for producing a coating material.
- FIG. 1 is a scanning electron micrograph showing the vicinity of the surface of the cross section of the alumina ball obtained in Example 1 of the present invention.
- FIG. 2 is a scanning electron micrograph showing the structure of the outermost surface of the alumina ball obtained in Example 1 of the present invention.
- FIG. 3 is a view showing the results of a catalytic activity test of the alumina balls obtained in Example 1 of the present invention.
- the present inventors have proposed a modified organosilicon polymer having a structure in which an organosilicon polymer is modified with an organometallic compound, or an organosilicon polymer or a mixture of the organosilicon polymer and the organometallic compound.
- the organometallic compound or the low-molecular-weight product containing the organometallic compound component is selectively transferred (bleed out) to the surface, Then, by firing in a predetermined atmosphere, a ceramic thin film having a surface layer (a layer having a desired function or environmental resistance) derived from the organometallic compound component is effectively formed, and We found that the thin film had no cracks or defects and had excellent adhesion to the substrate.
- the first phase mainly composed of a silicon-based ceramic citrus component may be either amorphous or crystalline.
- the silicon-based ceramic component include at least one of S i ⁇ 2 , S i C, and S i 3 N 4 .
- the first-phase silicon-based ceramic component is S i O 2
- it may contain a metal element or metal oxide capable of forming a solid solution or a eutectic compound with silica.
- the metal element (A) capable of forming a solid solution with silica or the metal element (B) whose oxide can form a compound having a specific composition with silica is not particularly limited.
- Examples of A) include titanium, and examples of the metal element (B) include aluminum, zirconium, yttrium, lithium, sodium, nordium, calcium, boron, zinc, nickel, manganese, magnesium, and iron.
- This first phase forms the internal phase of the ceramic citrus thin film obtained by the present invention, and plays an important role of bearing the mechanical properties.
- the proportion of the first phase in the entire ceramic thin film is preferably 99 to 40% by weight. More preferably, in order to sufficiently exhibit the intended function of the second phase and also exhibit high mechanical properties, the proportion of the first phase is controlled within the range of 50 to 95% by weight. Is preferred.
- the ceramic component constituting the second phase plays an important role in expressing the intended function in the present invention, but is selected according to the function.
- the ceramic box component constituting the second phase oxides, nitrides and at least one carbide and the like, for example, T i ⁇ 2, Z r ⁇ 2, BN, A 1 2 0 3, T i N, TiC and the like.
- T I_ ⁇ 2 walking the like also to form a substitutional solid solution is selected by the eutectic compound and a specific element, alkali resistance, acid resistance resistance, catalyst function, when the catalyst supporting capability is required, Z r 0 2 is selected.
- T i N and T i C functions granted as abrasion resistance imparted is obtained, et al. If piezoelectric characteristics are expected, lead-nozirconium / titanium-based oxide is selected.
- the ceramic component constituting the second phase is titania
- its crystal form usually changes from anatase to rutile when heated to 700 ° C. or higher. Even if the firing is performed at a high temperature of 130 ° C., the crystal form remains anatase, and therefore, by firing at a high temperature, the adhesiveness to the substrate can be strengthened.
- the particle diameter of the fine crystals of the ceramic component constituting the second phase is usually 50 nm or less.
- the particle size is preferably 15 nm or less, particularly preferably 10 nm or less.
- the proportion of the second phase constituting the surface layer portion of the ceramic thin film of the present invention varies depending on the type, but is preferably 1 to 60% by weight, so that its function is sufficiently exhibited and high strength is simultaneously exhibited. Is preferably controlled within the range of 5 to 50% by weight.
- Fine crystals of at least one ceramic component that constitutes this second phase The proportion of the particles increases in a gradient toward the surface, and it is preferable to control the thickness of the region where the composition gradient is clearly observed to be in the range of 5 to 5 nm.
- the "existence ratio" of the first phase and the second phase is defined as the silicon-based ceramic component constituting the first phase and the entire ceramic component constituting the second phase, that is, the ratio with respect to the entire ceramic thin film. It means the weight percent of the 1-phase silicon-based ceramic component and the 2nd-phase ceramic component.
- any material such as glass, ceramics, and metal can be used as long as it can withstand firing at a high temperature.
- glass or ceramics having excellent heat resistance is preferable.
- the shape may be any shape such as a plate, a cylinder, a prism, a cone, a sphere, a gourd, and a rugby ball.
- the substrate may be in a closed shape, may or may not have a lid, may be in the shape of a hollow tube such as a circular tube, a square tube, a fiber, a microballoon, or a honeycomb. It may be shaped or porous.
- a modified organosilicon polymer having a structure in which an organosilicon polymer is modified with an organometallic compound, or an organosilicon polymer or a mixture of the above-described modified organosilicon polymer and the organometallic compound The mixture is coated on the surface of the base material, subjected to a predetermined heat treatment, and further baked in an oxidizing atmosphere, an inert atmosphere, or an atmosphere containing nitrogen, whereby a ceramic thin film coating material having a gradient composition is obtained. Is obtained.
- the organic silicon polymer is not particularly limited, and polycarbosilane, polysilazane, polysilastyrene, methylchloropolysilane and the like are used.
- the number average molecular weight of the organic silicon polymer is preferably in the range of 200 to 100,000.
- M is A compound having a basic structure of a metal element, R, is an alkyl or phenyl group having 1 to 20 carbon atoms, R "is acetyl acetate, m and n are integers greater than 1).
- the modified organic silicon polymer is obtained by modifying the organic silicon polymer with the organic metal compound.
- the number average molecular weight of the modified organosilicon polymer is preferably in the range of 1,000 to 500,000.
- Modified polycarbosilane is mainly of the general formula
- R in the formula represents a hydrogen atom, a lower alkyl group or a phenyl group.
- the above-mentioned organometallic compound forms a monofunctional polymer with polycarbosilane, and only a part of the organometallic compound binds to polycarbosilane. It is necessary to select slow reaction conditions that form For this purpose, the reaction must be carried out in an inert gas at a temperature of 280 ° C or less, preferably 250 ° C or less. Under these reaction conditions, it is assumed that the organometallic compound has reacted with polycarbosilane. 03 009981
- the modified polycarbosilane in which the organometallic compound is partially bonded plays an important role in improving the compatibility between polycarbosilane and the organometallic compound.
- the modified polycarbosilane and the unreacted organometallic compound or an organic metal compound of about 2 to 3 trimers are mainly used as a starting material.
- a modified polycarbosilane component with a molecular weight is included
- a modified organosilicon polymer having a structure obtained by modifying the organosilicon polymer with an organometallic compound, or an organosilicon polymer or a mixture of the modified organosilicon polymer and an organometallic compound A solution of the mixture (hereinafter referred to as precursor polymer) in an organic solvent such as toluene or xylene is coated on the surface of the substrate.
- a known coating method such as a dip coating method ⁇ a spin coating method, a coating method, or a spray method is used.
- the thickness of the obtained ceramic thin film can be adjusted in the range of several 10 nm to several ⁇ m.
- the substrate coated with the precursor polymer is subjected to a predetermined heat treatment.
- the heat treatment is carried out in the same atmosphere as the sintering atmosphere to be described later, generally in the range of 50 to 400 ° C., and the treatment condition of several hours to 30 hours is selected.
- the second phase component in the precursor polymer bleeds out to the surface to form a base having a desired gradient composition.
- the base material after the heat treatment is fired in an oxidizing atmosphere, an inert atmosphere, or an atmosphere containing nitrogen in a temperature range of 500 to 180 ° C. It consists of a composite phase of a first phase mainly composed of elemental ceramic components and a second phase mainly composed of a ceramic component having a composition other than the first phase, and is composed of at least one ceramic component constituting the second phase.
- a ceramic thin film is formed on the substrate in which the proportion of the fine crystal grains increases inclining toward the surface layer.
- the first phase mainly composed of a silicon-based ceramic component generated by firing varies depending on the type of the precursor polymer and the firing atmosphere.
- the S i 0 2 nitrogen, argon, an inert atmosphere such as vacuum, S i C, in an ammonia atmosphere, S i 3 N 4 is mainly generated.
- Sia N 4 is mainly generated even in an inert atmosphere.
- the mixture was applied to one side of a silicon carbide flat plate using a spray gun.
- the plate was heated stepwise in air to 150 ° C. to make it infusible, and then fired in argon gas at 140 ° C. for 1 hour.
- a coating layer of about 10 m was formed on the surface of the silicon carbide flat plate.
- this coating layer was composed of zirconia and silicon carbide.
- the silicon carbide flat plate was heat-treated in air at 140 ° C. for 1 hour, cooled to room temperature, and then observed with an electron microscope. As a result, no abnormalities such as cracks were found in the coating layer, and no oxidation was observed in the silicon carbide inside. That is, it was confirmed that this coating layer had a sufficient function as an oxidation-resistant coating of silicon carbide.
- the silicon carbide flat plate was heat-treated in air at 140 ° C. for 1 hour, cooled to room temperature, and then observed with an electron microscope. As a result, many cracks and peeling of the coating layer were observed in the coating layer, and oxidation was also observed in the silicon carbide inside. In other words, it was found that this coating layer had no function as an oxidation-resistant coating of silicon carbide.
- ADVANTAGE OF THE INVENTION it is excellent in adhesiveness with a base material, has no cracks or defects, and has excellent functions such as a photocatalytic function, a thermal catalytic function, and a catalyst supporting function, or oxidation resistance, alkali resistance, and abrasion resistance.
- a ceramic thin film coating material having a graded composition that has environmental resistance such as heat resistance and excellent mechanical properties can be obtained.
- the ceramic component constituting the second phase is titania
- its crystal form usually changes from anatase to rutile when heated to 700 ° C. or higher. Even if baking is performed at a high temperature of 130 ° C., the crystal form remains anatase, so that the baking at a high temperature can enhance the adhesion to the substrate.
- the adhesiveness to the base material can be enhanced by setting the first phase to SiC.
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Surface Treatment Of Glass (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2003254819A AU2003254819A1 (en) | 2002-08-09 | 2003-08-06 | Material coated with thin ceramic film having graded composition and method for production thereof |
| EP03784535A EP1553209B1 (en) | 2002-08-09 | 2003-08-06 | Material coated with thin ceramic film having graded composition and method for production thereof |
| US10/522,775 US20050249960A1 (en) | 2002-08-09 | 2003-08-06 | Material coated with thin ceramic film having graded composition and method for production thereof |
| US11/584,637 US7494693B2 (en) | 2002-08-09 | 2006-10-23 | Ceramic thin film coating material having slope constitution and process for the production thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002232685A JP4122891B2 (ja) | 2002-08-09 | 2002-08-09 | 傾斜組成を有するセラミックス薄膜被覆材料及びその製造方法 |
| JP2002-232685 | 2002-08-09 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10522775 A-371-Of-International | 2003-08-06 | ||
| US11/584,637 Division US7494693B2 (en) | 2002-08-09 | 2006-10-23 | Ceramic thin film coating material having slope constitution and process for the production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004015168A1 true WO2004015168A1 (ja) | 2004-02-19 |
Family
ID=31711842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2003/009981 Ceased WO2004015168A1 (ja) | 2002-08-09 | 2003-08-06 | 傾斜組成を有するセラミックス薄膜被覆材料及びその製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US20050249960A1 (ja) |
| EP (1) | EP1553209B1 (ja) |
| JP (1) | JP4122891B2 (ja) |
| AU (1) | AU2003254819A1 (ja) |
| WO (1) | WO2004015168A1 (ja) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4576526B2 (ja) * | 2004-07-07 | 2010-11-10 | 国立大学法人京都大学 | 紫外及び可視光応答性チタニア系光触媒 |
| JPWO2006033177A1 (ja) * | 2004-09-24 | 2008-05-15 | 毅一郎 角 | チタンボールの製造方法及びチタンボール |
| DE102006038585A1 (de) * | 2006-08-17 | 2008-02-21 | Siemens Ag | Titandioxid-Schicht mit verbesserten Oberflächeneigenschaften |
| US7951736B2 (en) | 2006-09-20 | 2011-05-31 | Ube Industries, Ltd | SiC fiber-bonded ceramic and process for production of the same |
| JP4850876B2 (ja) * | 2008-07-08 | 2012-01-11 | 日本ピラー工業株式会社 | 光触媒担持体及びその製造方法 |
| JP2014104370A (ja) * | 2012-11-22 | 2014-06-09 | Toshiba Corp | 光触媒材料およびその製造方法 |
| JPWO2016010117A1 (ja) * | 2014-07-16 | 2017-04-27 | コニカミノルタ株式会社 | ガスバリア性フィルムおよびその製造方法ならびに当該ガスバリア性フィルムを用いてなる電子デバイス |
| JP6399510B2 (ja) * | 2014-09-30 | 2018-10-03 | 学校法人日本大学 | 耐水蒸気腐食性多層皮膜、およびその製造方法 |
| CN108911523A (zh) * | 2017-04-21 | 2018-11-30 | 深圳富泰宏精密工业有限公司 | 壳体及该壳体的制作方法 |
| WO2021119372A1 (en) * | 2019-12-12 | 2021-06-17 | Nelumbo Inc. | Assemblies of functionalized textile materials and methods of use thereof |
| CN120081675B (zh) * | 2025-03-07 | 2025-11-11 | 北京犇犇国际新材料科技有限公司 | 一种梯度表面的辐射降温陶瓷复合材料及其制备方法 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04187583A (ja) * | 1990-11-19 | 1992-07-06 | Tokai Carbon Co Ltd | 耐酸化性炭素繊維強化炭素複合材とその製造方法 |
| JPH07312459A (ja) * | 1994-05-16 | 1995-11-28 | Canon Inc | 光半導体素子 |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5674126A (en) * | 1979-11-21 | 1981-06-19 | Tokushu Muki Zairyo Kenkyusho | Novel polytitanocarbosilane and its preparation |
| KR100342150B1 (ko) * | 1995-03-20 | 2002-10-25 | 도토기키 가부시키가이샤 | 기재의표면을광촉매적으로초친수성이되게하는방법,초친수성의광촉매성표면을갖는기재및그의제조방법 |
| EP0850203B2 (fr) * | 1995-09-15 | 2012-01-04 | Rhodia Chimie | Substrat a revetement photocatalytique a base de dioxyde de titane et dispersions organiques a base de dioxyde de titane |
| FR2752235B3 (fr) * | 1996-08-07 | 1998-08-28 | Saint Gobain Vitrage | Substrat verrier muni d'une couche reflechissante |
| US5939194A (en) * | 1996-12-09 | 1999-08-17 | Toto Ltd. | Photocatalytically hydrophilifying and hydrophobifying material |
| FR2766494B1 (fr) * | 1997-07-22 | 2003-09-26 | Rhodia Chimie Sa | Dispersion de particules de titane comprenant un liant a base d'un polyorganosiloxane |
| JP3417862B2 (ja) * | 1999-02-02 | 2003-06-16 | 新東工業株式会社 | 酸化チタン光触媒高担持シリカゲルおよびその製造方法 |
| DE19913072B4 (de) | 1999-03-23 | 2005-10-13 | Mekra Lang Gmbh & Co. Kg | Außenspiegel für Kraftfahrzeuge |
| US6541416B2 (en) * | 2000-06-13 | 2003-04-01 | Ube Industries, Ltd. | Silica-group composite oxide fiber and process for the production thereof |
| JP2002097013A (ja) * | 2000-09-22 | 2002-04-02 | Japan Science & Technology Corp | 透明薄膜とその製造方法 |
-
2002
- 2002-08-09 JP JP2002232685A patent/JP4122891B2/ja not_active Expired - Fee Related
-
2003
- 2003-08-06 EP EP03784535A patent/EP1553209B1/en not_active Expired - Lifetime
- 2003-08-06 WO PCT/JP2003/009981 patent/WO2004015168A1/ja not_active Ceased
- 2003-08-06 US US10/522,775 patent/US20050249960A1/en not_active Abandoned
- 2003-08-06 AU AU2003254819A patent/AU2003254819A1/en not_active Abandoned
-
2006
- 2006-10-23 US US11/584,637 patent/US7494693B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04187583A (ja) * | 1990-11-19 | 1992-07-06 | Tokai Carbon Co Ltd | 耐酸化性炭素繊維強化炭素複合材とその製造方法 |
| JPH07312459A (ja) * | 1994-05-16 | 1995-11-28 | Canon Inc | 光半導体素子 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1553209B1 (en) | 2012-10-10 |
| EP1553209A1 (en) | 2005-07-13 |
| US20050249960A1 (en) | 2005-11-10 |
| AU2003254819A1 (en) | 2004-02-25 |
| US20070059560A1 (en) | 2007-03-15 |
| EP1553209A4 (en) | 2008-09-03 |
| JP4122891B2 (ja) | 2008-07-23 |
| JP2004067480A (ja) | 2004-03-04 |
| US7494693B2 (en) | 2009-02-24 |
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