JP3520530B2 - Carbon fiber reinforced carbon composite and sliding material - Google Patents
Carbon fiber reinforced carbon composite and sliding materialInfo
- Publication number
- JP3520530B2 JP3520530B2 JP18614493A JP18614493A JP3520530B2 JP 3520530 B2 JP3520530 B2 JP 3520530B2 JP 18614493 A JP18614493 A JP 18614493A JP 18614493 A JP18614493 A JP 18614493A JP 3520530 B2 JP3520530 B2 JP 3520530B2
- Authority
- JP
- Japan
- Prior art keywords
- composite material
- carbon fiber
- carbon
- aluminum
- fiber reinforced
- 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.)
- Expired - Fee Related
Links
- 239000002131 composite material Substances 0.000 title claims description 32
- 229920000049 Carbon (fiber) Polymers 0.000 title claims description 15
- 239000004917 carbon fiber Substances 0.000 title claims description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims description 14
- 229910052799 carbon Inorganic materials 0.000 title claims description 14
- 239000000463 material Substances 0.000 title description 6
- DHAHRLDIUIPTCJ-UHFFFAOYSA-K aluminium metaphosphate Chemical compound [Al+3].[O-]P(=O)=O.[O-]P(=O)=O.[O-]P(=O)=O DHAHRLDIUIPTCJ-UHFFFAOYSA-K 0.000 claims description 11
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims description 8
- 238000005470 impregnation Methods 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- YZYDPPZYDIRSJT-UHFFFAOYSA-K boron phosphate Chemical compound [B+3].[O-]P([O-])([O-])=O YZYDPPZYDIRSJT-UHFFFAOYSA-K 0.000 claims description 3
- 229910000149 boron phosphate Inorganic materials 0.000 claims description 3
- 238000000280 densification Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000012779 reinforcing material Substances 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 claims 1
- 230000008021 deposition Effects 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 239000010452 phosphate Substances 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 230000003647 oxidation Effects 0.000 description 18
- 238000007254 oxidation reaction Methods 0.000 description 18
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 14
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 7
- 229910001463 metal phosphate Inorganic materials 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 239000005011 phenolic resin Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000004580 weight loss Effects 0.000 description 3
- 229910017119 AlPO Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- HDYRYUINDGQKMC-UHFFFAOYSA-M acetyloxyaluminum;dihydrate Chemical compound O.O.CC(=O)O[Al] HDYRYUINDGQKMC-UHFFFAOYSA-M 0.000 description 2
- 229940009827 aluminum acetate Drugs 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- -1 pitch-based Chemical compound 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000002296 pyrolytic carbon Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 102220057728 rs151235720 Human genes 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
- Braking Arrangements (AREA)
- Ceramic Products (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動車、二輪車、鉄道
車両、航空機、産業機械等のブレーキやクラッチおよび
軸受け等に用いられる摺動材料に関し、とくに炭素繊維
強化炭素複合材（以下、Ｃ／Ｃ複合材という）に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding material used for brakes, clutches, bearings, etc. of automobiles, two-wheeled vehicles, railway vehicles, aircrafts, industrial machines, etc. C composite material).
【０００２】[0002]
【従来の技術】Ｃ／Ｃ複合材は、炭素繊維を補強材とし
炭素をマトリクスとした複合材料であって耐熱性、耐薬
品性、摩擦特性に優れ、かつ高強度で軽量なためロケッ
トノズルや航空機などのブレーキディスク、パッドなど
に使用されている。しかしながら、Ｃ／Ｃ複合材を含め
て、炭素材料は一般に５００℃程度から酸化を受け、そ
れ自身の持つ優れた、物理的、化学的性質が低下するた
め、高温大気中での使用はごく短時間のものを除き不可
能であった。この減少を防止するために従来から炭素材
料の耐酸化性を高める方法について種々の検討がなされ
てきた。例えば特開昭５６−１６５７５号公報にみられ
るように、リン酸を含浸させることにより耐酸化性能を
向上させることも行なわれている。2. Description of the Related Art C / C composite material is a composite material in which carbon fiber is used as a reinforcing material and carbon is used as a matrix. It is excellent in heat resistance, chemical resistance and friction characteristics, and has high strength and light weight. It is used for brake discs and pads for aircraft. However, carbon materials including C / C composite materials are generally oxidized at about 500 ° C., and their excellent physical and chemical properties are deteriorated. Therefore, their use in high temperature atmosphere is very short. It was impossible except for time. In order to prevent this decrease, various studies have hitherto been made on methods for increasing the oxidation resistance of carbon materials. For example, as shown in JP-A-56-16575, it is also attempted to improve the oxidation resistance performance by impregnating with phosphoric acid.
【０００３】[0003]
【発明が解決しようとする課題】しかし、その性能はま
だ充分とはいえず過酷な条件で用いられる摺動材に対し
てはさらなる向上が望まれていた。そこで本発明者ら
は、鋭意検討の結果、単なるリン酸ではなく、リン酸を
金属塩の形で含有させることにより、かかる課題が解決
されることを見出し、本発明に到達した。すなわち本発
明の目的は、Ｃ／Ｃ複合材の耐酸化性能をさらに向上さ
せ、かつそれを摺動材として用いた場合に安定した摩擦
係数を示すＣ／Ｃ複合材およびその製造方法を提供する
ことでありかかる目的は、リン酸金属塩を含有すること
を特徴とする炭素繊維強化炭素複合材により容易に達成
される。However, the performance is not yet sufficient, and further improvement has been desired for sliding materials used under severe conditions. Therefore, as a result of intensive studies, the present inventors have found that such a problem can be solved by containing phosphoric acid in the form of a metal salt instead of mere phosphoric acid, and arrived at the present invention. That is, an object of the present invention is to provide a C / C composite material which further improves the oxidation resistance performance of the C / C composite material and exhibits a stable friction coefficient when it is used as a sliding material, and a method for producing the same. This object is easily achieved by a carbon fiber reinforced carbon composite material characterized by containing a metal phosphate.
【０００４】以下、本発明につき詳細に説明する。本発
明で用いるＣ／Ｃ複合材の炭素繊維としては、ピッチ
系、ＰＡＮ系あるいはレーヨン系炭素繊維等の公知のい
ずれのものも使用できる。これら炭素繊維の形態は２０
００〜８０００の単繊維の束からなるトウ、ストラン
ド、ロービング、ヤーン等で、これらをカッティングす
ることによって得られる短繊維状のものを用いる。本発
明においては、通常０．３〜１００ｍｍ、好ましくは５
〜５０ｍｍ程度の短繊維を使用する。炭素繊維自体の径
や弾性率は、一般に複合材として用いられる範囲で特に
限定はされない。Ｃ／Ｃ複合材とする際に解繊・分散し
てプリフォームまたはシートとする。これらにマトリッ
クス材を含浸して金型に充填し、１００〜５００℃の温
度で加圧成形してＶｆ（繊維体積含有率）が５〜６５
％、好ましくは１０〜５５％の成形体を得る。その後、
Ｎ2 ガスなどの不活性ガス雰囲気中で１〜２００℃／ｈ
ｒの昇温速度で８００〜２５００℃まで昇温し、焼成し
てＣ／Ｃ複合材とする。その後用途に応じてフェノール
樹脂、フラン樹脂等の熱硬化性物質、タール、ピッチ等
の熱可塑性物質を含浸、再度炭化を行う含浸法、例えば
メタン、プロパンなどの炭化水素ガスを熱分解して炭素
を得るＣＶＤ法などにより緻密化を繰り返し行い、さら
に高強度のＣ／Ｃ複合材とすることもできる。The present invention will be described in detail below. As the carbon fiber of the C / C composite material used in the present invention, any known carbon fiber such as pitch-based, PAN-based or rayon-based carbon fiber can be used. The form of these carbon fibers is 20
A tow, a strand, a roving, a yarn, or the like composed of a bundle of monofilaments of 0 to 8000, and a short fiber-like one obtained by cutting these are used. In the present invention, it is usually 0.3 to 100 mm, preferably 5
Short fibers of about 50 mm are used. The diameter and elastic modulus of the carbon fiber itself are not particularly limited within the range generally used as a composite material. When it is made into a C / C composite material, it is defibrated and dispersed into a preform or sheet. These are impregnated with a matrix material, filled in a mold, and pressure-molded at a temperature of 100 to 500 ° C. to obtain Vf (fiber volume content) of 5 to 65.
%, Preferably 10-55% molded bodies are obtained. afterwards,
1 to 200 ° C / h in an inert gas atmosphere such as N 2 gas
The temperature is raised to 800 to 2500 ° C. at a heating rate of r and fired to obtain a C / C composite material. Then, according to the application, a thermosetting substance such as phenol resin or furan resin is impregnated with a thermoplastic substance such as tar or pitch, and carbonization is performed again, for example, carbon is obtained by pyrolyzing a hydrocarbon gas such as methane or propane. It is also possible to obtain a C / C composite material having higher strength by repeatedly performing densification by a CVD method or the like.
【０００５】本発明では、前記のようにして得たＣ／Ｃ
複合材にリン酸金属塩を含有させ、本発明のＣ／Ｃ複合
材を得る。このとき、リン酸金属塩がＣ／Ｃ複合材の表
面に存在するだけでは耐酸化性が劣るため、中央部まで
含浸しているのが好ましい。リン酸金属塩の金属として
は、好ましくはＡｌ、Ｂである。特にＡｌの場合は、メ
タリン酸アルミニウムで、Ａ型およびＢ型の結晶型のも
のが好ましい。メタリン酸アルミニウムは、いくつかの
型を持っており、４つのメタリン酸アルミニウムが四角
に結合するＡ型、直鎖状にメタリン酸アルミニウムが並
ぶＢ型が安定している。高温雰囲気下ではＢ型メタリン
酸アルミニウムは、時間がたつとＡ型に変化し、Ａ型メ
タリン酸アルミニウムは時間がたつとＰ2Ｏ5とＡｌＰＯ
4に分解する。Ｐ2Ｏ5とＡｌＰＯ4に分解してしまうと耐
酸化性の向上という効果が弱くなってしまうので、より
好ましくは、Ｂ型メタリン酸アルミニウムである。リン
酸金属塩は、原料液体を刷毛塗り、スプレー、含浸等の
常法で含有させることができるが、例えば減圧下、室温
で通常１〜３０Ｔｏｒｒの条件下で１〜５０重量％、好
ましくは５〜３０重量％のリン酸金属塩溶液に浸漬し、
含浸させる。含浸する時間は１０分〜２時間が好まし
く、約１時間含浸させる方法がもっとも好ましい。そし
てさらに好ましい態様としては、減圧下での浸漬後に、
常圧でさらに１〜２時間浸漬することである。例えば、
リン酸アルミニウムを耐酸化剤とする場合には、リン酸
と酢酸アルミニウムの反応、第一リン酸アルミニウムの
熱処理等が用いられる。第一リン酸アルミニウムはリン
酸に比べ危険性が少なく、常温で水に溶けるため含浸時
にＣ／Ｃ複合材に均一に分散させることが可能である。
含浸処理後、乾燥し、さらにこれを６００℃以上、好ま
しくは６００℃〜９００℃で０．５〜２時間、好ましく
は１時間程度熱処理することにより、水、アルコールに
不溶のリン酸アルミニウムに変化し、水等によって溶出
することなく使用できるため、第一リン酸アルミニウム
を出発原料として用いるのが好ましい。以下、本発明を
実施例により具体的に説明するが、本発明はその要旨を
越えない限り、下記実施例によって限定されるものでは
ない。In the present invention, the C / C obtained as described above is used.
A C / C composite material of the present invention is obtained by incorporating a metal phosphate into the composite material. At this time, since the oxidation resistance is inferior only if the metal phosphate is present on the surface of the C / C composite material, it is preferable to impregnate the central portion. The metal of the metal phosphate is preferably Al or B. Particularly in the case of Al, aluminum metaphosphates of A type and B type are preferable. Aluminum metaphosphate has several types, and A type in which four aluminum metaphosphates are bound in a square and B type in which aluminum metaphosphates are linearly arranged are stable. In a high-temperature atmosphere, B-type aluminum metaphosphate changes to A-type with time, and A-type aluminum metaphosphate changes with time into P 2 O 5 and AlPO.
Disassemble into 4 . If it is decomposed into P 2 O 5 and AlPO 4 , the effect of improving the oxidation resistance is weakened, so B-type aluminum metaphosphate is more preferable. The metal phosphate can be contained in the raw material liquid by a conventional method such as brush coating, spraying or impregnation, but for example, 1 to 50% by weight, preferably 5 to 5% by weight under reduced pressure at room temperature and usually 1 to 30 Torr. Immerse in ~ 30 wt% metal phosphate solution,
Impregnate. The impregnation time is preferably 10 minutes to 2 hours, and the method of impregnation for about 1 hour is most preferable. And as a further preferred embodiment, after immersion under reduced pressure,
It is to immerse at normal pressure for 1 to 2 hours. For example,
When aluminum phosphate is used as an antioxidant, reaction between phosphoric acid and aluminum acetate, heat treatment of primary aluminum phosphate, and the like are used. Aluminum monophosphate is less dangerous than phosphoric acid, and since it dissolves in water at room temperature, it can be uniformly dispersed in the C / C composite during impregnation.
After the impregnation treatment, it is dried and further heat-treated at 600 ° C. or higher, preferably 600 ° C. to 900 ° C. for 0.5 to 2 hours, preferably about 1 hour, so that aluminum phosphate which is insoluble in water or alcohol is converted. However, since it can be used without elution with water or the like, it is preferable to use monoaluminum phosphate as a starting material. Hereinafter, the present invention will be specifically described with reference to Examples, but the present invention is not limited to the following Examples as long as the gist thereof is not exceeded.
【０００６】[0006]
〔実施例１〕３０ｍｍ長のピッチ系炭素繊維をランダム
ウェバーにて解繊し、炭素繊維が二次元ランダムに配向
したシートを得る。このシートへエタノールで希釈した
フェノール樹脂を含浸させた後乾燥し、フェノール樹脂
を含浸したシートを作製した。このシートを金型内へ積
層し、２５０℃にて加圧成形し、Ｖｆが約５０％の成形
体を得た。この成形体を加熱炉で２０００℃まで焼成し
た後、高周波加熱装置により加熱し、炭化水素蒸気をＮ
2 ガスをキャリアーガスとして反応器内に導入して、熱
分解炭素により気孔を充填する緻密化処理を行った。次
いで、フェノール樹脂を含浸した後、加熱炉で１０００
℃で焼成した。さらに同様の含浸−焼成の操作を再度繰
り返しその後に２０００℃の処理を行って気孔率１７％
のＣ／Ｃ複合材を得た。[Example 1] A pitch-based carbon fiber having a length of 30 mm is defibrated by a random webber to obtain a sheet in which carbon fibers are two-dimensionally randomly oriented. The sheet was impregnated with a phenol resin diluted with ethanol and then dried to prepare a sheet impregnated with the phenol resin. This sheet was laminated in a mold and pressure-molded at 250 ° C. to obtain a molded body having Vf of about 50%. After firing this molded body in a heating furnace to 2000 ° C., it is heated by a high frequency heating device to remove hydrocarbon vapor from N 2
Two gases were introduced into the reactor as a carrier gas, and a densification treatment was performed by filling pores with pyrolytic carbon. Then, after impregnating with phenol resin, 1000 in a heating furnace
Baked at ° C. Further, the same impregnation-calcination operation was repeated again, and then a treatment at 2000 ° C. was performed to obtain a porosity of 17%.
C / C composite material was obtained.
【０００７】ついで、このＣ／Ｃ複合材を真空容器中で
濃度１０重量％の第一リン酸アルミニウム溶液に含浸
し、１０ｔｏｒｒ以下に減圧、１時間保持した。そし
て、空気中１２０℃で乾燥、窒素中８００℃で熱処理す
る事によって、Ｂ型メタリン酸アルミニウムを含有する
Ｃ／Ｃ複合材を得た。このようにして得られたＣ／Ｃ複
合材を２０×２０×１０ｍｍｔ（厚みが１０ｍｍ）に加
工し、空気中、７００℃で、３０分間保持するという試
験を４回繰り返し、そのときの重量減少によっ耐酸化性
能の評価を行った。この複合材の断面を偏光顕微鏡で観
察したところ、全面にＢ型メタリン酸アルミニウムが分
散していることが分った。また、慣性式摩擦試験機によ
って回転速度５０００ｒｐｍ、押しつけ面圧１２ｋｇ／
ｃｍ2 の試験を１５０回繰り返し行い、摩擦係数を測定
した。酸化減量割合が８．６％、摩擦係数の１５０回の
平均値０．１５、３σ（σ：標準偏差）＝０．００９と
なり、後述の比較例と比べて明らかなように、含浸処理
することにより耐酸化性能および摩擦係数の安定性が向
上したことがわかる。Then, the C / C composite material was impregnated with a 10 wt% concentration monoaluminum phosphate solution in a vacuum vessel, and the pressure was maintained at 10 torr or less under reduced pressure for 1 hour. Then, by drying in air at 120 ° C. and heat-treating in nitrogen at 800 ° C., a C / C composite material containing B-type aluminum metaphosphate was obtained. The C / C composite material thus obtained was processed into 20 × 20 × 10 mmt (thickness: 10 mm), and the test of holding in air at 700 ° C. for 30 minutes was repeated 4 times, and the weight loss at that time was reduced. Therefore, the oxidation resistance performance was evaluated. When a cross section of this composite material was observed with a polarization microscope, it was found that B-type aluminum metaphosphate was dispersed over the entire surface. Also, using an inertial friction tester, the rotation speed was 5000 rpm and the pressing surface pressure was 12 kg /
The cm 2 test was repeated 150 times to measure the friction coefficient. Oxidation weight loss ratio was 8.6%, friction coefficient 150 times average value 0.15, 3σ (σ: standard deviation) = 0.009, and impregnation treatment should be performed as is clear from comparison with the comparative example described later. The results show that the oxidation resistance performance and the stability of the friction coefficient are improved.
【０００８】〔実施例２〕実施例１において、第一リン
酸アルミニウム溶液のかわりに酢酸アルミニウムとリン
酸の混合溶液を用いる以外は実施例１と同様にしてＡ型
メタリン酸アルミニウムを含有するＣ／Ｃ複合材を調製
し、摩擦試験および耐酸化試験を行ったところ、摩擦係
数０．１３、３σ＝０．００６、酸化減量割合が９．０
％、となり実施例１と同様の、安定した摩擦係数と耐酸
化性能が得られた。また、得られたＣ／Ｃ複合材の断面
の全面にＡ型メタリン酸アルミニウムが分散しているこ
とを実施例１と同様にして確認した。[Example 2] C containing A-type aluminum metaphosphate in the same manner as in Example 1 except that a mixed solution of aluminum acetate and phosphoric acid was used in place of the monoaluminum phosphate solution. When a / C composite material was prepared and subjected to a friction test and an oxidation resistance test, the friction coefficient was 0.13, 3σ = 0.006, and the oxidation loss ratio was 9.0.
%, The stable friction coefficient and oxidation resistance performance similar to those in Example 1 were obtained. In addition, it was confirmed in the same manner as in Example 1 that A-type aluminum metaphosphate was dispersed on the entire cross section of the obtained C / C composite material.
【０００９】〔実施例３〕実施例１において、含浸剤と
してリン酸ホウ素を用いる以外は実施例１と同様にして
試料を調製し、摩擦試験および耐酸化試験を行ったとこ
ろ、実施例１と同様の結果が得られた。Example 3 A sample was prepared in the same manner as in Example 1 except that boron phosphate was used as the impregnating agent, and a friction test and an oxidation resistance test were conducted. Similar results were obtained.
【００１０】〔比較例１〕実施例１において、含浸剤と
してリン酸を用いる以外は実施例１と同様にして試料を
調製し、耐酸化試験を行ったところ、酸化減量割合が１
３％となり、実施例１よりも耐酸化性能が劣っているこ
とがわかった。[Comparative Example 1] A sample was prepared in the same manner as in Example 1 except that phosphoric acid was used as the impregnating agent, and an oxidation resistance test was conducted.
It was 3%, and it was found that the oxidation resistance performance was inferior to that of Example 1.
【００１１】〔比較例２〕実施例１のリン酸金属塩を含
有していない試料について実施例１と同様の耐酸化試験
と摩擦試験を行ったところ、酸化減量割合が３６％、摩
擦係数０．２２、３σ＝０．０３３となり、耐酸化性
能、摩擦係数の安定性とも実施例１より劣っていること
がわかった。[Comparative Example 2] A sample containing no metal phosphate of Example 1 was subjected to the same oxidation resistance test and friction test as in Example 1. As a result, the oxidation weight loss ratio was 36% and the friction coefficient was 0. 0.23, 3σ = 0.033, and it was found that the oxidation resistance performance and the stability of the friction coefficient were inferior to those of Example 1.
【００１２】[0012]
【発明の効果】以上述べたように本発明によると、従来
の摺動材に比べて、耐酸化性能が向上するとともに、繰
り返し使用時にも安定した摩擦係数を示す優れた摺動材
料が得られる。As described above, according to the present invention, it is possible to obtain an excellent sliding material having improved oxidation resistance as compared with the conventional sliding material and exhibiting a stable friction coefficient even after repeated use. .
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｆ１６Ｃ 33/24 Ｃ０４Ｂ 35/52 Ｅ Ｆ１６Ｄ 69/02 35/80 Ｂ (72)発明者 井上 吉明 香川県坂出市香の州町１番地 三菱化成 株式会社坂出工場内 (56)参考文献 特開 昭63−23036（ＪＰ，Ａ) 特開 昭50−150708（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 41/80 - 41/91 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 Identification code FI F16C 33/24 C04B 35/52 E F16D 69/02 35/80 B (72) Inventor Yoshiaki Inoue Kanoshu Town, Sakaide City, Kagawa Prefecture No. 1 Mitsubishi Kasei Co., Ltd. Sakaide factory (56) Reference JP-A-63-23036 (JP, A) JP-A-50-150708 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB) Name) C04B 41/80-41/91
Claims (5)
クスとしてなる炭素繊維強化炭素複合材であって、Ａ型
メタリン酸アルミニウム、Ｂ型メタリン酸アルミニウ
ム、リン酸ホウ素のいずれかを含有することを特徴とす
る炭素繊維強化炭素複合材。1. A carbon fiber is used as a reinforcing material, and carbon is used as a matrix.
C-shaped carbon fiber reinforced carbon composite material, type A
Aluminum metaphosphate, B-type aluminum metaphosphate
A carbon fiber reinforced carbon composite material , which comprises one of aluminum and boron phosphate .
リン酸アルミニウム、リン酸ホウ素のいずれかが炭素繊
維強化炭素複合材の中心部まで分散している請求項１記
載の炭素繊維強化炭素複合材。2. The A-type aluminum metaphosphate and B-type meta
The carbon fiber-reinforced carbon composite material according to claim 1 , wherein either aluminum phosphate or boron phosphate is dispersed to the central portion of the carbon fiber-reinforced carbon composite material.
１又は２に記載の炭素繊維強化炭素複合材。3. The carbon fiber reinforced carbon composite material according to claim 1 or 2, wherein the fiber deposition content is 5 to 65%.
強化炭素複合材から形成される摺動材。4. A sliding member formed of carbon fiber reinforced carbon composite material according to any of claims 1-3.
材を乾式または湿式解繊し、繊維が二次元ランダムに配
向したシートを作製し、樹脂またはピッチを含浸後、、
積層して形成した後に、焼成、緻密化した後、アルミニ
ウム又はホウ素のリン酸塩溶液で含浸処理する請求項１
〜３のいずれかに記載の複合材の製造方法。5. A short fiber reinforced carbon composite material comprising a plurality of single fibers is dry or wet defibrated to prepare a sheet in which fibers are two-dimensionally randomly oriented, and after impregnation with a resin or pitch,
After forming by stacking, firing and densification, aluminum
Claim impregnation treatment with a phosphate solution um or boron 1
The manufacturing method of the composite material in any one of -3 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18614493A JP3520530B2 (en) | 1993-07-28 | 1993-07-28 | Carbon fiber reinforced carbon composite and sliding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18614493A JP3520530B2 (en) | 1993-07-28 | 1993-07-28 | Carbon fiber reinforced carbon composite and sliding material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0741376A JPH0741376A (en) | 1995-02-10 |
| JP3520530B2 true JP3520530B2 (en) | 2004-04-19 |
Family
ID=16183155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18614493A Expired - Fee Related JP3520530B2 (en) | 1993-07-28 | 1993-07-28 | Carbon fiber reinforced carbon composite and sliding material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3520530B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19524510A1 (en) * | 1995-07-05 | 1997-01-09 | Klein Schanzlin & Becker Ag | Fluid-lubricated plain bearing |
| US6017611A (en) * | 1998-02-20 | 2000-01-25 | Felix Schoeller Technical Papers, Inc. | Ink jet printable support material for thermal transfer |
| JP4980524B2 (en) * | 2001-08-07 | 2012-07-18 | 日本碍子株式会社 | Carbon-ceramic composite, metal object transport roller, and molten aluminum stirring shaft |
| JP4765275B2 (en) * | 2004-07-22 | 2011-09-07 | 三菱樹脂株式会社 | Antioxidant for carbon material, carbon material excellent in oxidation resistance, and production method thereof |
| FR2880016B1 (en) | 2004-12-23 | 2007-04-20 | Messier Bugatti Sa | PROCESS FOR PRODUCING A FIBROUS PREFORM FOR THE MANUFACTURE OF CARBON / CARBON COMPOSITE MATERIAL PARTS INCORPORATING CERAMIC PARTICLES, AND PRODUCT PRODUCED THEREBY |
| JP5339321B2 (en) * | 2007-02-28 | 2013-11-13 | 独立行政法人産業技術総合研究所 | Oxidation-resistant graphite material and method for producing the same |
| EP2487342B1 (en) * | 2007-06-13 | 2018-04-18 | 3M Innovative Properties Company | Erosion resistant mounting material and method of making and using the same |
| CN103862731B (en) * | 2014-03-26 | 2015-09-16 | 哈尔滨理工大学 | Rectangular pyramid configuration C fthe preparation method of/SiC-ZrC bionic gradient lattice composite material flat board |
| CN115108844B (en) * | 2022-07-26 | 2022-12-09 | 中南大学 | A gradient adaptive carbon fiber/quartz fiber composite reinforced metal phosphate-based composite material and its preparation method |
-
1993
- 1993-07-28 JP JP18614493A patent/JP3520530B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0741376A (en) | 1995-02-10 |
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