JPH08217555A - Fiber reinforced ceramic composite material - Google Patents

Fiber reinforced ceramic composite material

Info

Publication number
JPH08217555A
JPH08217555A JP7022542A JP2254295A JPH08217555A JP H08217555 A JPH08217555 A JP H08217555A JP 7022542 A JP7022542 A JP 7022542A JP 2254295 A JP2254295 A JP 2254295A JP H08217555 A JPH08217555 A JP H08217555A
Authority
JP
Japan
Prior art keywords
composite material
ceramic composite
oxidation
fiber
coating
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
Application number
JP7022542A
Other languages
Japanese (ja)
Inventor
Akitatsu Masaki
彰樹 正木
Takahito Araki
隆人 荒木
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.)
IHI Corp
Original Assignee
IHI Corp
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.)
Filing date
Publication date
Application filed by IHI Corp filed Critical IHI Corp
Priority to JP7022542A priority Critical patent/JPH08217555A/en
Publication of JPH08217555A publication Critical patent/JPH08217555A/en
Pending legal-status Critical Current

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  • Ceramic Products (AREA)

Abstract

PURPOSE: To obtain a composite material capable of preventing the oxidation of the interfacial coatings even at >=500 deg.C and capable of suppressing the reduction of the strength of the material. CONSTITUTION: In a ceramic composite body made of a ceramic matrix contg. reinforcing fibers with interfacial coatings on the peripheries, oxidation resistant films of at least one among TiB2 , ZrB2 , B4 C, BN and MoSi2 have been formed on the peripheries of the interfacial coatings.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、繊維強化セラミックス
複合材料に関するもので、たとえば、ガスタービンのブ
レードやディスクなどの部品に使用される材料として好
適なものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber reinforced ceramic composite material, and is suitable as a material used for parts such as blades and disks of gas turbines.

【0002】[0002]

【従来の技術】従来の繊維強化セラミックス複合材料
は、たとえば、図3に示すような構成からなっている。
図3において、11はセラミックスマトリックス、12
は該マトリックス11に内蔵されているセラミックスの
強化繊維、13は複合材料のじん性を高めるために該繊
維12の外周に施されたCまたはBNの界面コーティン
グである。
2. Description of the Related Art A conventional fiber-reinforced ceramic composite material has, for example, a structure as shown in FIG.
In FIG. 3, 11 is a ceramic matrix, 12
Is a reinforcing fiber of ceramics contained in the matrix 11, and 13 is an interface coating of C or BN provided on the outer periphery of the fiber 12 to enhance the toughness of the composite material.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、従来の
繊維強化セラミックス複合材料においては、大気中では
酸素の存在によって前記界面コーティング13が直接酸
化され、それがCの場合は、温度が500度Cの付近に
なると、酸化が急激に進み、BNの場合でも、せいぜい
1000度C程度までであって、それ以上の温度では、
前記界面コーティング13は酸化後に気化してしまい、
固体層としては存在しなくなって繊維強化セラミックス
複合材料がぜい弱化してしまうという問題点があった。
However, in the conventional fiber-reinforced ceramics composite material, the interface coating 13 is directly oxidized in the presence of oxygen in the atmosphere, and when it is C, the temperature is 500 ° C. In the vicinity, oxidation rapidly progresses, and even in the case of BN, the temperature is up to about 1000 ° C, and at temperatures above that,
The interface coating 13 is vaporized after oxidation,
There is a problem in that the fiber-reinforced ceramics composite material is no longer present as a solid layer and is weakened.

【0004】本発明は、上記のような問題点を解決しよ
うとするものである。すなわち、本発明は、500度C
以上の温度になっても、界面コーティングの酸化を防ぐ
ことができて材料の強度の低下を軽減させることができ
る繊維強化セラミックス複合材料を提供することを目的
とするものである。
The present invention is intended to solve the above problems. That is, the present invention is 500 degrees C
It is an object of the present invention to provide a fiber-reinforced ceramics composite material which can prevent the oxidation of the interface coating and reduce the decrease in the strength of the material even at the above temperature.

【0005】[0005]

【課題を解決するための手段】上記目的を達成するた
め、本発明は、外周に界面コーティングが施されている
強化繊維を内蔵しているセラミックスマトリックスから
なるセラミックス複合体において、前記界面コーティン
グの外周に、TiB2 ,ZrB2 ,B4 C,BN,Mo
Si2 の中の少なくとも1つによる耐酸化膜が形成され
ているものとした。
In order to achieve the above object, the present invention provides a ceramic composite comprising a ceramic matrix containing reinforcing fibers having an outer peripheral surface coated with an interfacial coating. In addition, TiB 2 , ZrB 2 , B 4 C, BN, Mo
It is assumed that an oxidation resistant film made of at least one of Si 2 is formed.

【0006】[0006]

【作用】本発明によれば、外周に界面コーティングが施
されている強化繊維を内蔵しているセラミックスマトリ
ックスからなるセラミックス複合体において、前記界面
コーティングの外周に、TiB2 ,ZrB2 ,B4 C,
BN,MoSi2 の中の少なくとも1つによる耐酸化膜
が形成されているので、前記マトリックスに侵入してき
た酸素(O2 )は、界面コーティングに到達する前に前
記耐酸化膜にかち合って酸化物を生成し、その後の酸素
の侵入をブロックする。このため、界面コーティングに
到達する酸素は微少なものとなる。
According to the present invention, in a ceramic composite comprising a ceramic matrix containing reinforcing fibers having an interface coating on the outer periphery thereof, TiB 2 , ZrB 2 , B 4 C is provided on the outer periphery of the interface coating. ,
Since the oxidation resistant film is formed of at least one of BN and MoSi 2 , oxygen (O 2 ) that has penetrated into the matrix is mixed with the oxidation resistant film before reaching the interface coating. To block the subsequent ingress of oxygen. Therefore, the amount of oxygen reaching the interface coating is very small.

【0007】[0007]

【実施例】図1は本発明の第1実施例を示している。図
1において、1はセラミックスマトリックス、2は該マ
トリックス1に内蔵されたセラミックスの強化繊維、3
は該繊維2の外周に施されたCまたはBNからなる界面
コーティング、4は該界面コーティング3の外周に形成
されたTiB 2 ,ZrB2 ,B4 C,BNのいずれか1
つまたは数種の組合せによる耐酸化膜である。
FIG. 1 shows a first embodiment of the present invention. Figure
1, 1 is a ceramic matrix, 2 is the matrix
Reinforced ceramic fibers built into Trix 1 3
Is an interface composed of C or BN applied to the outer periphery of the fiber 2.
Coating 4 is formed on the outer periphery of the interface coating 3.
TiB 2, ZrB2, BFourEither C or BN 1
It is an oxidation resistant film formed by one or a combination of several kinds.

【0008】このように構成された繊維強化セラミック
ス複合材料においては、セラミックスマトリックス1に
侵入してきた酸素(O2 )は、界面コーティング3に到
達する前に耐酸化膜4にかち合って酸化物を生成し、そ
の後の酸素の侵入をブロックする。このため、界面コー
ティング3に到達する酸素は微少なものとなる。したが
って、界面コーティング3の酸化はごく僅かに過ぎず、
強化繊維の劣化が防がれる。
In the fiber-reinforced ceramic composite material thus constructed, the oxygen (O 2 ) that has entered the ceramic matrix 1 forms an oxide by colliding with the oxidation resistant film 4 before reaching the interface coating 3. Block the subsequent ingress of oxygen. Therefore, the amount of oxygen reaching the interface coating 3 is very small. Therefore, the oxidation of the interfacial coating 3 is negligible,
Deterioration of the reinforcing fiber is prevented.

【0009】図2は本発明の第2実施例を示している。
図2において、1から3までは図1の場合と同じであ
る。5は界面コーティング3の外周に形成されたMoS
2 による高温用耐酸化膜である。
FIG. 2 shows a second embodiment of the present invention.
In FIG. 2, 1 to 3 are the same as those in FIG. 5 is MoS formed on the outer periphery of the interfacial coating 3.
It is a high temperature oxidation resistant film by i 2 .

【0010】図1と2に示した繊維強化セラミックス複
合材料の製法としては、たとえば、界面コーティング3
を施した強化繊維を、該耐酸化膜4の物質もしくは高温
用耐酸化膜5の物質MoSi2 を溶した溶剤中に浸して
焼き固めたのち、気相含浸法または含浸焼成法でセラミ
ックスマトリックスを形成する。
As a method for producing the fiber-reinforced ceramic composite material shown in FIGS. 1 and 2, for example, the interfacial coating 3 is used.
The reinforced fiber thus treated is immersed in a solvent in which the substance of the oxidation resistant film 4 or the substance of the oxidation resistant film 5 for high temperature 5 MoSi 2 is dissolved and baked, and then a ceramic matrix is formed by a vapor phase impregnation method or an impregnation firing method. Form.

【0011】実験の結果、前記第1実施例では、100
0度Cの温度までは界面コーティング3の酸化が防止さ
れたが、前記第2実施例では、1400度Cの温度にお
いても、その酸化を防止することができた。
As a result of the experiment, in the first embodiment, 100
Oxidation of the interface coating 3 was prevented up to a temperature of 0 ° C, but in the second embodiment, the oxidation could be prevented even at a temperature of 1400 ° C.

【0012】[0012]

【発明の効果】以上説明したように、本発明によれば、
外周に界面コーティングが施されている強化繊維を内蔵
しているセラミックスマトリックスからなるセラミック
ス複合体において、前記界面コーティングの外周に、T
iB2 ,ZrB2 ,B4 C,BN,MoSi2 の中の少
なくとも1つによる耐酸化膜が形成されているので、前
記マトリックスに侵入してきた酸素(O2 )は、界面コ
ーティングに到達する前に前記耐酸化膜にかち合って酸
化物を生成し、その後の酸素の侵入をブロックする。こ
のため、界面コーティングに到達する酸素は微少なもの
となり、したがって、界面コーティングの酸化はごく僅
かに過ぎず、強化繊維の劣化が防がれる。
As described above, according to the present invention,
In a ceramic composite consisting of a ceramic matrix containing reinforcing fibers having an interface coating on the outer periphery, a T composite is formed on the outer periphery of the interface coating.
Since the oxidation resistant film is formed of at least one of iB 2 , ZrB 2 , B 4 C, BN, and MoSi 2 , oxygen (O 2 ) that has entered the matrix can reach before the interfacial coating. Further, it forms an oxide by cleaving with the oxidation resistant film, and blocks the invasion of oxygen thereafter. Therefore, the amount of oxygen reaching the interfacial coating is extremely small, and therefore, the oxidation of the interfacial coating is negligible and deterioration of the reinforcing fiber is prevented.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の第1実施例を示した断面図である。FIG. 1 is a sectional view showing a first embodiment of the present invention.

【図2】本発明の第2実施例を示した断面図である。FIG. 2 is a sectional view showing a second embodiment of the present invention.

【図3】従来の技術の一例を示した断面図である。FIG. 3 is a sectional view showing an example of a conventional technique.

【符号の説明】 1 セラミックスマトリックス 2 強化繊維 3 界面コーティング 4 耐酸化膜 5 高温用耐酸化膜[Explanation of symbols] 1 Ceramics matrix 2 Reinforcing fiber 3 Interface coating 4 Oxidation resistant film 5 Oxidation resistant film for high temperature

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 外周に界面コーティングが施されている
強化繊維を内蔵しているセラミックスマトリックスから
なるセラミックス複合体において、前記界面コーティン
グの外周に、TiB2 ,ZrB2 ,B4 C,BN,Mo
Si2 の中の少なくとも1つによる耐酸化膜が形成され
ていることを特徴とする、繊維強化セラミックス複合材
料。
1. A ceramic composite comprising a ceramic matrix containing reinforcing fibers having an interfacial coating applied to the outer periphery thereof, wherein TiB 2 , ZrB 2 , B 4 C, BN and Mo are provided on the outer periphery of the interfacial coating.
A fiber-reinforced ceramics composite material, characterized in that an oxidation resistant film of at least one of Si 2 is formed.
JP7022542A 1995-02-10 1995-02-10 Fiber reinforced ceramic composite material Pending JPH08217555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7022542A JPH08217555A (en) 1995-02-10 1995-02-10 Fiber reinforced ceramic composite material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7022542A JPH08217555A (en) 1995-02-10 1995-02-10 Fiber reinforced ceramic composite material

Publications (1)

Publication Number Publication Date
JPH08217555A true JPH08217555A (en) 1996-08-27

Family

ID=12085714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7022542A Pending JPH08217555A (en) 1995-02-10 1995-02-10 Fiber reinforced ceramic composite material

Country Status (1)

Country Link
JP (1) JPH08217555A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112501538A (en) * 2019-08-26 2021-03-16 中国科学院上海硅酸盐研究所 High-temperature-resistant ablation-resistant composite coating and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03285877A (en) * 1990-03-31 1991-12-17 Tonen Corp Fiber reinforced ceramic composite material and fiber for reinforcement
JPH03290375A (en) * 1990-04-09 1991-12-20 Sumitomo Electric Ind Ltd Composite material reinforced with coated carbon fiber
JPH05186268A (en) * 1991-06-17 1993-07-27 General Electric Co <Ge> Silicon carbide composite material having fiber reinforcing material coated with metal nitride
JPH07197264A (en) * 1993-12-29 1995-08-01 Tonen Corp Surface treating method of fiber, reinforced fiber and its application

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03285877A (en) * 1990-03-31 1991-12-17 Tonen Corp Fiber reinforced ceramic composite material and fiber for reinforcement
JPH03290375A (en) * 1990-04-09 1991-12-20 Sumitomo Electric Ind Ltd Composite material reinforced with coated carbon fiber
JPH05186268A (en) * 1991-06-17 1993-07-27 General Electric Co <Ge> Silicon carbide composite material having fiber reinforcing material coated with metal nitride
JPH07197264A (en) * 1993-12-29 1995-08-01 Tonen Corp Surface treating method of fiber, reinforced fiber and its application

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112501538A (en) * 2019-08-26 2021-03-16 中国科学院上海硅酸盐研究所 High-temperature-resistant ablation-resistant composite coating and preparation method thereof

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