JP2008081379A - セラミックス基複合材とその製造方法 - Google Patents
セラミックス基複合材とその製造方法 Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 67
- 239000000203 mixture Substances 0.000 claims abstract description 41
- 238000010304 firing Methods 0.000 claims abstract description 31
- 239000004744 fabric Substances 0.000 claims abstract description 25
- 239000011159 matrix material Substances 0.000 claims abstract description 14
- 239000003960 organic solvent Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims description 56
- 229910052799 carbon Inorganic materials 0.000 claims description 37
- 239000002245 particle Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 25
- 229920000642 polymer Polymers 0.000 claims description 25
- 229910052710 silicon Inorganic materials 0.000 claims description 23
- 239000010703 silicon Substances 0.000 claims description 22
- 239000011153 ceramic matrix composite Substances 0.000 claims description 21
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical group [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 17
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- 239000002994 raw material Substances 0.000 claims description 15
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 15
- 238000001556 precipitation Methods 0.000 claims description 9
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000008096 xylene Substances 0.000 claims description 8
- 239000012784 inorganic fiber Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 28
- 239000002759 woven fabric Substances 0.000 abstract description 13
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- 238000011049 filling Methods 0.000 abstract description 8
- 238000005470 impregnation Methods 0.000 description 30
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
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- 238000010583 slow cooling Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
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- 239000011800 void material Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 229910021382 natural graphite Inorganic materials 0.000 description 1
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- 238000001179 sorption measurement Methods 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
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- 238000009941 weaving Methods 0.000 description 1
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Abstract
【解決手段】 炭素よりなる粉末と、シリコンよりなる粉末と、有機溶媒を含む媒質と、を含む混合物を調製し、無機物の繊維よりなる織物を前記混合物に埋没し、前記混合物を前記織物に含浸せしめるべく前記混合物を加振し、含浸した前記沈殿を含む前記織物を焼成する、ことにより、セラミックス基複合材を製造する。
【選択図】図1
Description
炭素よりなる粉末として、ニカビーズICB−0520(日本カーボン)の商品名で入手できる平均粒径5μmの真球状の炭素よりなる粉末、UF−G10(昭和電工)の商品名で入手できる薄片状の合成黒鉛粉末(平均粒径4.5μm)、およびニカビーズMPX−6(日本カーボン)の商品名で入手できる塊状の炭素粉(平均粒径6μm)の3種を採用した。シリコンよりなる粉末として、Siパウダー75μm(株式会社高純度化学研究所)をボールミルにて粉砕し、平均粒径4μmとしたものを採用した。これら炭素よりなる粉末とシリコンの粉末との3種の組み合わせを、それぞれモル比で1:1(重量比で約3:7)となるべく混合し、メタノールに十分に均一となるべく混合して、混合物とした。前記混合物を適宜の時間静置して、沈殿を生ぜしめた後、前記試料を沈殿中に埋没し、ソノクイック(超音波工業株式会社)の商品名で入手できる超音波加振機により38kHzの超音波を出力250Wにて10分間引加した。その後、試料を引き上げて、105℃の乾燥大気中でメタノールを十分に蒸発せしめ、重量を測定した。次いで、アルゴン雰囲気中で1450℃の加熱を60分間保持して、焼成を行った。焼成後、徐冷の後、再び重量を測定した。
ポリカルボシランとキシレンを混合し、その混合比を適宜に調整することにより、3種類の粘度0.7,0.9,3.7mPaSとしたものを調製し、ポリマー溶液とした。粘度の測定法は、JIS−Z8803によった。これに上述のニカビーズMPX−6と、上述のシリコン粉末とをモル比で1:1(重量比で約3:7)となるべく混合して添加し、十分に均一となるべく混合して、混合物とした。前記混合物を適宜の時間静置して、沈殿を生ぜしめた後、前記試料を沈殿中に埋没し、上述と同様に38kHzの超音波を出力250Wにて10分間引加した。その後、試料を引き上げて、105℃の乾燥大気中でキシレンを十分に蒸発せしめ、重量を測定した。次いで、アルゴン雰囲気中で1450℃の加熱を60分間保持して、焼成を行った。焼成後、徐冷の後、再び重量を測定した。
本発明との比較のため、従来技術であるスラリ含浸法によってもセラミックス基複合材の製造を試みた。ニカビーズICB−0520(日本カーボン)の商品名で入手できる平均粒径5μmの真球状の炭素よりなる粉末と、上述と同様の平均粒径4μmのシリコン粉末とを、モル比で1:1(重量比で約3:7)となるべく混合し、エタノール中に懸濁してスラリとした。前記平板試料又は前記円筒試料に前記スラリを10分間含浸した。その後、試料を引き上げ、105℃の乾燥大気中でエタノールを十分に蒸発せしめ、重量を測定した。次いで、アルゴン雰囲気中で1450℃の加熱を60分間保持して、焼成を行った。焼成後、徐冷の後、再び重量を測定した。
dpowder :含浸粉末の密度(g/cm3)
Vfill :球形の粒子を充填したときの理想的な充填率、52.4%
dCMC :含浸前の試験片かさ密度(g/cm3)
Vvoid :含浸前の試験片気孔率(%)
またdpowderは次の式により得られる。
10 織物
20 混合物
30 沈殿
Claims (16)
- 無機物の繊維よりなる織物と、
炭素よりなる粉末と、シリコンよりなる粉末と、有機溶媒を含む媒質と、を含む混合物に前記織物を埋没し、加振することにより前記織物に含浸し、焼成することにより生成するセラミックスを含む、前記繊維間を結合するマトリックスと、
を含む、セラミックス基複合材。 - 前記媒質はさらにポリマー原料を含む、請求項1に記載のセラミックス基複合材。
- 前記媒質は、粘度が0.8mPaS以上4mPaS以下となるべく調製されたものである、請求項2に記載のセラミックス基複合材。
- 前記加振は、超音波振動による、請求項1から3の何れかに記載のセラミックス基複合材。
- 前記炭素よりなる粉末は、粒径1μm以上20μm以下であり、前記シリコンよりなる粉末は、粒径1μm以上75μm以下である、請求項1から4の何れかに記載のセラミックス基複合材。
- 前記炭素よりなる粉末は、14.2m2/g以下の比表面積を有する、請求項1から5の何れかに記載のセラミックス基複合材。
- 前記無機物は、シリコンカーバイドである、請求項1から6の何れかに記載のセラミックス基複合材。
- 前記マトリックスは、シリコンカーバイドを含む、請求項1から6の何れかに記載のセラミックス基複合材。
- 炭素よりなる粉末と、シリコンよりなる粉末と、有機溶媒を含む媒質と、を含む混合物を調製し、
無機物の繊維よりなる織物を前記混合物に埋没し、
前記混合物を前記織物に含浸せしめるべく前記混合物を加振し、
含浸した前記混合物を含む前記織物を焼成する、
ことよりなる、セラミックス基複合材を製造する方法。 - 前記混合物を静置して沈殿を生ぜしめることをさらに含み、前記埋没するステップにおいて前記織物は前記沈殿中に埋没する、請求項9に記載の方法。
- 前記媒質は、さらにポリマー原料を含む、請求項9に記載の方法。
- 前記媒質を粘度が0.8mPaS以上4mPaS以下となるべく調製することをさらに含む、請求項11に記載の方法。
- 前記加振するステップにおいて、超音波振動を利用する、請求項9から12の何れかに記載の方法。
- 前記炭素よりなる粉末は、粒径1μm以上20μm以下であり、前記シリコンよりなる粉末は、粒径1μm以上75μm以下である、請求項9から13の何れかに記載の方法。
- 前記炭素よりなる粉末は、14.2m2/g以下の比表面積を有する、請求項9から14の何れかに記載の方法。
- 前記有機溶媒は、キシレンである、請求項9から15の何れかに記載の方法。
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JP2016150873A (ja) * | 2015-02-18 | 2016-08-22 | 株式会社Ihi | セラミックス基複合材の製造方法 |
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