JPH06219856A - Fiber reinforced composite material - Google Patents
Fiber reinforced composite materialInfo
- Publication number
- JPH06219856A JPH06219856A JP5026210A JP2621093A JPH06219856A JP H06219856 A JPH06219856 A JP H06219856A JP 5026210 A JP5026210 A JP 5026210A JP 2621093 A JP2621093 A JP 2621093A JP H06219856 A JPH06219856 A JP H06219856A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- silicon
- reinforced composite
- composite material
- reinforcing material
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は繊維強化複合材料に関す
るものである。FIELD OF THE INVENTION The present invention relates to a fiber reinforced composite material.
【０００２】[0002]
【従来の技術】近年、炭素繊維（Ｃ）、炭化珪素繊維
（ＳｉＣ）、チラノ繊維（Ｓｉ−Ｔｉ−Ｏ−Ｃ）、アル
ミナ繊維（Ａｌ2 Ｏ3 ）等を強化材とし、炭化珪素（Ｓ
ｉＣ）、窒化珪素（Ｓｉ3 Ｎ4 ）、アルミナ（Ａｌ2 Ｏ
3 ）等をマトリックス（母材）とした繊維強化複合材料
の研究開発が行われている。2. Description of the Related Art In recent years, carbon fiber (C), silicon carbide fiber (SiC), tyranno fiber (Si-Ti-O-C), alumina fiber (Al 2 O 3 ) and the like have been used as a reinforcing material, and silicon carbide (S
iC), silicon nitride (Si 3 N 4 ), alumina (Al 2 O
3 ) Research and development of fiber-reinforced composite materials using such materials as a matrix (matrix).
【０００３】図４は上記の繊維強化複合材料の一例を示
すもので、１は炭素、炭化珪素、チラノ、アルミナ等の
強化繊維よりなる強化材部、２は炭化珪素、窒化珪素、
アルミナ等のセラミックスよりなるマトリックス部であ
り、強化材部１はマトリックス部２の中に所定間隔で配
置されている。FIG. 4 shows an example of the above-mentioned fiber-reinforced composite material. 1 is a reinforcing material portion made of reinforcing fibers such as carbon, silicon carbide, tyranno, and alumina, 2 is silicon carbide, silicon nitride,
The matrix portion is made of ceramics such as alumina, and the reinforcing material portion 1 is arranged in the matrix portion 2 at predetermined intervals.
【０００４】更に、必要に応じてマトリックス部２の外
側面に耐酸化コーティングを施したものもある。Further, there is also a case where an oxidation resistant coating is applied to the outer surface of the matrix portion 2 if necessary.
【０００５】このような構造を有する繊維強化複合材料
は、軽量で比強度（材料の強度と密度との比、すなわち
材料の単位重量あたりの強度）が大きいので、種々の分
野において利用が検討されている。The fiber-reinforced composite material having such a structure is lightweight and has a high specific strength (ratio between the strength and the density of the material, that is, the strength per unit weight of the material), and therefore its use in various fields has been studied. ing.
【０００６】[0006]
【発明が解決しようとする課題】ところが、繊維強化複
合材料では、マトリックス部２に亀裂が生じると該亀裂
から流入する外気が強化材部１に接触し、該強化材部１
に含有されている炭素等が酸化されて強度が低下するこ
とがある。However, in the fiber-reinforced composite material, when a crack is generated in the matrix portion 2, the outside air flowing from the crack comes into contact with the reinforcing material portion 1 and the reinforcing material portion 1
The carbon and the like contained in may be oxidized and the strength may be reduced.
【０００７】本発明は上述した実情に鑑みてなしたもの
で、耐酸化性の高い繊維強化複合材料を提供することを
目的としている。The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a fiber-reinforced composite material having high oxidation resistance.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、本発明の繊維強化複合材料においては、セラミック
スよりなるマトリックス部の中に、外側面に珪素系の界
面コーティング部を形成した強化繊維よりなる強化材部
を所定間隔に配している。In order to achieve the above object, in the fiber-reinforced composite material of the present invention, a reinforcing fiber in which a silicon-based interface coating portion is formed on the outer surface in a matrix portion made of ceramics is used. The reinforcing material portions are arranged at predetermined intervals.
【０００９】[0009]
【作用】本実施例の繊維強化複合材料では、マトリック
ス部に亀裂が生じると、該亀裂から流入する外気が界面
コーティング部に接触し、界面コーティング部を形成す
る珪素と外気に含まれている酸素とが反応することによ
り酸化珪素が形成され、強化材部を形成する強化繊維の
酸化が防止される。In the fiber-reinforced composite material of this embodiment, when a crack occurs in the matrix portion, the outside air flowing in from the crack comes into contact with the interface coating portion, and the silicon forming the interface coating portion and the oxygen contained in the outside air. Silicon oxide is formed by the reaction of and with each other, and oxidation of the reinforcing fibers forming the reinforcing material portion is prevented.
【００１０】[0010]
【実施例】以下本発明の実施例を図面を参照しつつ説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１から図３は本発明の繊維強化複合材料
の一実施例を示すもので、３は炭化珪素繊維よりなる強
化材部、４は強化材部３の外側面に形成した炭化珪素系
の界面コーティング部、５は炭化珪素よりなるマトリッ
クス部であり、強化材部３はマトリックス部５の中に所
定間隔で配されている。1 to 3 show an embodiment of the fiber-reinforced composite material of the present invention, 3 is a reinforcing material part made of silicon carbide fiber, 4 is a silicon carbide formed on the outer surface of the reinforcing material part 3. The interface coating portions 5 of the system are matrix portions made of silicon carbide, and the reinforcing material portions 3 are arranged in the matrix portion 5 at predetermined intervals.
【００１２】６は強化材部界面（界面コーティング部４
と強化材部３との界面）、７はマトリックス部界面（界
面コーティング部４とマトリックス部５との界面）、８
は界面間中央部（強化材部界面６とマトリックス部界面
７の略中央部）である。Reference numeral 6 denotes an interface of the reinforcing material portion (interface coating portion 4).
And the reinforcing material portion 3), 7 is the matrix portion interface (the interface between the interface coating portion 4 and the matrix portion 5), 8
Is the central portion between the interfaces (substantially the central portion of the reinforcing material interface 6 and the matrix interface 7).
【００１３】前記の界面コーティング部４は、図３に示
す如く、強化材部界面６付近とマトリックス部界面７付
近と界面間中央部８付近とが炭素５０％、珪素５０％の
炭化珪素により形成され、強化材部界面６と界面間中央
部８との間が炭素が主成分である炭化珪素により且つマ
トリックス部界面７と界面間中央部８との間が珪素が主
成分である炭化珪素によりそれぞれ形成されている。As shown in FIG. 3, the interface coating portion 4 is formed of silicon carbide containing 50% carbon and 50% silicon in the vicinity of the interface 6 of the reinforcing material portion, the vicinity of the interface 7 of the matrix portion and the vicinity of the central portion 8 between the interfaces. The reinforcing material portion interface 6 and the inter-interface central portion 8 are made of silicon carbide containing carbon as a main component, and the matrix portion interface 7 and the inter-interface central portion 8 are made of silicon carbide as a main component. Each is formed.
【００１４】上述した構成を有する繊維強化複合材料を
製造する際には、炭化珪素の繊維よりなる強化材部３に
対し、炭化水素系ガス処理を行って該強化材部３の外側
面に炭素を付着させたうえ、更に強化材部３に対し、Ｃ
ＶＤ（化学気相蒸着法）、あるいはＣＶＩ（化学気相堆
積法）により珪素を付着させて、前記の界面コーティン
グ部４を形成させておく。When manufacturing the fiber-reinforced composite material having the above-mentioned structure, the reinforcing material portion 3 made of silicon carbide fibers is subjected to a hydrocarbon gas treatment so that carbon is formed on the outer surface of the reinforcing material portion 3. C is attached to the reinforcing material portion 3 as well.
Silicon is attached by VD (Chemical Vapor Deposition) or CVI (Chemical Vapor Deposition) to form the interface coating section 4 in advance.
【００１５】更に、界面コーティング部４を形成した強
化材部３を所定間隔で配置したうえ、該強化材部３に対
して焼結法により炭化珪素を付着させてマトリックス部
５を形成する。Further, the reinforcing material portions 3 having the interface coating portions 4 are arranged at predetermined intervals, and silicon carbide is adhered to the reinforcing material portions 3 by a sintering method to form the matrix portion 5.
【００１６】本実施例の繊維強化複合材料においては、
マトリックス部５に亀裂が生じると、該亀裂から流入す
る外気は界面コーティング部４に接触する。In the fiber-reinforced composite material of this embodiment,
When a crack is generated in the matrix portion 5, the outside air flowing from the crack comes into contact with the interface coating portion 4.
【００１７】このとき、界面コーティング部４のマトリ
ックス部界面７と界面間中央部８との間の部分は、珪素
が主成分である炭化珪素により形成されているので、珪
素と外気に含まれている酸素とが反応することにより酸
化珪素（ＳｉＯ）が形成される。At this time, since the portion between the interface 7 of the matrix portion of the interface coating portion 4 and the central portion 8 between the interfaces is formed of silicon carbide containing silicon as a main component, it is contained in the silicon and the ambient air. Silicon oxide (SiO) is formed by the reaction with the existing oxygen.
【００１８】よって、強化材部３を形成する炭化珪素繊
維の酸化が防止され、マトリックス部５に亀裂が生じて
も強度が低下することがない。Therefore, the silicon carbide fibers forming the reinforcing material portion 3 are prevented from being oxidized, and the strength is not lowered even if the matrix portion 5 is cracked.
【００１９】更に、この繊維強化複合材料が高温度雰囲
気下で使用されていたとすると、酸化珪素は高温度雰囲
気下で粘度が低くなる傾向を呈するので、低粘度化した
酸化珪素により前記の亀裂が閉塞され、マトリックス部
５への外気の流入が遮断される。Further, if this fiber reinforced composite material is used in a high temperature atmosphere, the viscosity of silicon oxide tends to be low in a high temperature atmosphere, so that the above-mentioned cracks are caused by the low viscosity silicon oxide. It is closed and the inflow of outside air into the matrix portion 5 is blocked.
【００２０】このように、本実施例の繊維強化複合材料
においては、界面コーティング部４のマトリックス部界
面７と界面間中央部８との間の部分を、珪素が主成分で
ある炭化珪素により形成しているので、繊維強化複合材
料に高い耐酸化性を具備させることができる。As described above, in the fiber-reinforced composite material of the present embodiment, the portion between the interface 7 of the matrix portion of the interface coating portion 4 and the central portion 8 between the interfaces is formed of silicon carbide containing silicon as a main component. Therefore, the fiber-reinforced composite material can be provided with high oxidation resistance.
【００２１】なお、本発明の繊維強化複合材料は、上述
した実施例のみに限定されるものではなく、強化材部に
炭化珪素繊維に替えて炭素繊維、チラノ繊維、アルミナ
繊維等を用いるようにすること、マトリックス部に炭化
珪素に替えて窒化珪素、アルミナ等のセラミックスを用
いるようにすること、更にマトリックス部の外側面に耐
酸化コーティングを施すようにすること、その他、本発
明の要旨を逸脱しない範囲内において種々変更を加え得
ることは勿論である。The fiber-reinforced composite material of the present invention is not limited to the above-mentioned embodiments, but carbon fibers, tyranno fibers, alumina fibers or the like may be used instead of silicon carbide fibers in the reinforcing material portion. The use of ceramics such as silicon nitride or alumina in place of silicon carbide in the matrix portion, and further, an oxidation resistant coating is applied to the outer surface of the matrix portion. It goes without saying that various changes can be made within the range not covered.
【００２２】[0022]
【発明の効果】以上述べたように、本発明の繊維強化複
合材料によれば、下記のような種々の優れた効果を奏し
得る。As described above, according to the fiber-reinforced composite material of the present invention, various excellent effects as described below can be obtained.
【００２３】（１）強化材部の外側面に珪素系の界面コ
ーティング部を形成しているので、マトリックス部に亀
裂が生じて外気が界面コーティング部に接触すると、珪
素と外気に含まれている酸素とが反応することにより酸
化珪素が形成され、よって強化材部を形成する強化繊維
の酸化を効果的に防止することができ、繊維強化複合材
料に高い耐酸化性を具備させることができる。(1) Since the silicon-based interface coating portion is formed on the outer surface of the reinforcing material portion, when a crack is generated in the matrix portion and the outside air comes into contact with the interface coating portion, it is contained in the silicon and the outside air. By reacting with oxygen, silicon oxide is formed, so that the reinforcing fibers forming the reinforcing material portion can be effectively prevented from being oxidized, and the fiber-reinforced composite material can have high oxidation resistance.
【００２４】（２）高温度雰囲気下においては、酸化珪
素は粘度が低くなる傾向を呈するので、低粘度化した酸
化珪素によりマトリックス部に生じた亀裂が閉塞され、
マトリックス部への外気の流入が遮断される。(2) In a high temperature atmosphere, since silicon oxide tends to have a low viscosity, cracks generated in the matrix portion are blocked by the low viscosity silicon oxide,
The inflow of outside air into the matrix is blocked.
【図１】本発明の繊維強化複合材料の一実施例を示す断
面図である。FIG. 1 is a cross-sectional view showing an example of a fiber-reinforced composite material of the present invention.
【図２】本発明の繊維強化複合材料の一実施例における
界面コーティング部の拡大断面図である。FIG. 2 is an enlarged cross-sectional view of an interface coating portion in one example of the fiber-reinforced composite material of the present invention.
【図３】本発明の繊維強化複合材料の一実施例における
界面コーティング部の成分分布を示すグラフである。FIG. 3 is a graph showing a component distribution of an interface coating portion in an example of the fiber-reinforced composite material of the present invention.
【図４】従来の繊維強化複合材料の一例を示す断面図で
ある。FIG. 4 is a cross-sectional view showing an example of a conventional fiber-reinforced composite material.
３ 強化材部 ４ 界面コーティング部 ５ マトリックス部 3 Reinforcement part 4 Interface coating part 5 Matrix part
Claims (1)
中に、外側面に珪素系の界面コーティング部を形成した
強化繊維よりなる強化材部を所定間隔に配してなること
を特徴とする繊維強化複合材料。1. A fiber-reinforced composite material comprising a matrix portion made of ceramics and reinforcing material portions made of reinforcing fibers having a silicon-based interface coating portion formed on an outer surface thereof arranged at predetermined intervals. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5026210A JPH06219856A (en) | 1993-01-21 | 1993-01-21 | Fiber reinforced composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5026210A JPH06219856A (en) | 1993-01-21 | 1993-01-21 | Fiber reinforced composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06219856A true JPH06219856A (en) | 1994-08-09 |
Family
ID=12187084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5026210A Pending JPH06219856A (en) | 1993-01-21 | 1993-01-21 | Fiber reinforced composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06219856A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012148963A (en) * | 2010-12-27 | 2012-08-09 | Yokohama National Univ | Long fiber reinforced ceramic composite material having self-healing capacity |
| JP2016530180A (en) * | 2013-03-15 | 2016-09-29 | ロールス−ロイス コーポレイション | Ceramic matrix composite material and production method for producing ceramic matrix composite material |
-
1993
- 1993-01-21 JP JP5026210A patent/JPH06219856A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012148963A (en) * | 2010-12-27 | 2012-08-09 | Yokohama National Univ | Long fiber reinforced ceramic composite material having self-healing capacity |
| JP2016530180A (en) * | 2013-03-15 | 2016-09-29 | ロールス−ロイス コーポレイション | Ceramic matrix composite material and production method for producing ceramic matrix composite material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4877880B2 (en) | Ceramic material containing a layer that preferentially reacts with oxygen | |
| US5738951A (en) | Method of manufacturing a composite material with lamellar interphase between reinforcing fibers and matrix, and material obtained | |
| KR100775819B1 (en) | Ceramic with zircon coating | |
| JP4113857B2 (en) | Article comprising silicon substrate, bond layer and protective layer | |
| EP1479659A2 (en) | Bond coating for silicon based substrates such as silicon nitride | |
| Aoki et al. | SiC/C multi-layered coating contributing to the antioxidation of C/C composites and the suppression of through-thickness cracks in the layer | |
| EP3252278A1 (en) | High temperature composites with enhanced matrix | |
| JP4753568B2 (en) | SiC fiber reinforced ceramic composite environment resistant coating and method for producing the same | |
| JPH04301077A (en) | Composite material with fireproof fiber-reinforced material and manufacture thereof | |
| JP4109651B2 (en) | Article comprising a silicon substrate, a bond layer and an additional layer provided on the bond layer | |
| JPH06219856A (en) | Fiber reinforced composite material | |
| EP0639165B1 (en) | A CERAMIC COMPOSITE, PARTICULARLY FOR USE AT TEMPERATURES ABOVE 1400 oC | |
| JPH03199172A (en) | Coated carbon fiber reinforced composite material | |
| Kmetz et al. | Silicon carbide/silicon and silicon carbide/silicon carbide composites produced by chemical vapor infiltration | |
| EP0993423B1 (en) | Article having a modified mullite coating and method of making the same | |
| JP2003321277A (en) | Ceramic-based composite material and method for producing the same | |
| Vandenbulke et al. | Silicon and boron containing components by CVD and CVI for high temperature ceramic composites | |
| JP2000302575A (en) | Coating resistant to oxidation | |
| JP2001122681A (en) | Oxidation resistant coating method for non-oxide high temperature material | |
| JPH09256168A (en) | Coating method on graphite | |
| Wang et al. | Ceramic with preferential oxygen reactive layer | |
| JPH0648834A (en) | Oxidation-resistant carbon material | |
| JPH09188567A (en) | Composite ceramic fiber | |
| WO1993022258A1 (en) | A ceramic composite, particularly for use at temperatures above 1400 °c | |
| JPH11116347A (en) | Fiber-reinforced ceramic and its production |