JP6130362B2 - 炭素材−セラミック材接合体の製造方法、及び炭素材−セラミック材接合体 - Google Patents
炭素材−セラミック材接合体の製造方法、及び炭素材−セラミック材接合体 Download PDFInfo
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- JP6130362B2 JP6130362B2 JP2014515607A JP2014515607A JP6130362B2 JP 6130362 B2 JP6130362 B2 JP 6130362B2 JP 2014515607 A JP2014515607 A JP 2014515607A JP 2014515607 A JP2014515607 A JP 2014515607A JP 6130362 B2 JP6130362 B2 JP 6130362B2
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Description
炭素材−セラミック材接合体2の製造方法においては、まず、図1に示される炭素材10を用意する。
図2に示されているように、炭素材−セラミック材接合体2は、炭素材10と、セラミック材12とを備えている。セラミック材12は、炭素材10と接合されている。
炭素材として、かさ密度が1.8Mg/m3、曲げ強度が40MPa、線熱膨張係数が4.7×10−6/Kの等方性黒鉛を用いた。無機材料として、窒化アルミニウム(AlN)粉末を用いた。焼結助剤として、酸化イットリウム(Y2O3)を用いた。無機材料と焼結助剤とが、質量比で95:5となるように混合し、この混合物を炭素材の上に配置して積層体を作製した。得られた積層体を、放電プラズマ焼結法により約30MPaの圧力下、約1900℃で加熱して、炭素材−セラミック材接合体Aを作製した。
無機材料と焼結助剤との混合物として、酸化イットリウム(Y2O3)を含む窒化アルミニウム(AlN)焼結板を用いたこと以外は、実施例1と同様にして、炭素材−セラミック材接合体Bを作製した。
無機材料としての窒化アルミニウム(AlN)粉末(平均粒子径0.6μm、比表面積2.7m2/g)と、焼結助剤としての酸化イットリウム(Y2O3)とを質量比(無機材料:焼結助剤)が95:5となるように混合した。次に、この混合物に、分散剤としてリン酸2−ヘチルヘキシル、溶媒として2−ブタノン・エタノール混合物(体積比67:33)、バインダーとしてポリビニルブチラール、可塑剤としてポリエチレングリコール・フタル酸ベンジルブチルアルコール混合物(質量比50:50)を添加し、自転・公転ミキサーで混合してスラリーを得た。得られたスラリーを、ドクターブレードを用いて、PETフィルム上に塗工し、乾燥させて140μmのシートを得た。このシートを、実施例2で用いた炭素材と窒化アルミニウム(AlN)焼結板との間に配置して積層体としたこと以外は、実施例1と同様にして放電プラズマ焼結法により炭素材−セラミック材接合体Cを作製した。
無機材料として炭化ケイ素(SiC)粉末(平均粒径0.8μm、比表面積13m2/g〜15m2/g)を用い、焼結助剤として酸化イットリウム(Y2O3)と酸化アルミニウム(Al2O3)を用い、重量比がSiC:Y2O3:Al2O3=91:3:6となるように混合し、放電プラズマ焼結法における温度を1800℃としたこと以外は実施例1と同様にして、炭素材−セラミック材接合体Dを作製した。
放電プラズマ焼結法における温度を1900℃とした以外は実施例4と同様にして、炭素材−セラミック材接合体Eを作製した。実施例1と同様にして、炭素材−セラミック材接合体Eの接合強度を測定したところ、18MPaであった。炭素材−セラミック材接合体Eでは、炭素材と無機材とが強固に接合されていた。
放電プラズマ焼結法における温度を2000℃とした以外は実施例4と同様にして、炭素材−セラミック材接合体Fを作製した。実施例1と同様にして、炭素材−セラミック材接合体Fの接合強度を測定したところ、12MPaであった。炭素材−セラミック材接合体Fでは、炭素材と無機材とが強固に接合されていた。
窒化アルミニウム(AlN)と酸化イットリウム(Y2O3)の配合比率を、質量比で97.5:2.5とした以外は実施例1と同様にして、炭素材−セラミック材接合体Iを作製した。実施例1と同様にして、炭素材−セラミック材接合体Iの接合強度を測定したところ、9MPaであった。炭素材−セラミック材接合体Iでは、炭素材と無機材とが強固に接合されていた。
窒化アルミニウム(AlN)と酸化イットリウム(Y2O3)の配合比率を、質量比で90:10とした以外は実施例1と同様にして、炭素材−セラミック材接合体Jを作製した。実施例1と同様にして、炭素材−セラミック材接合体Jの接合強度を測定したところ、19MPaであった。炭素材−セラミック材接合体Jでは、炭素材と無機材とが強固に接合されていた。
焼結助剤を用いなかったこと以外は、実施例1と同様にして、積層体を放電プラズマ焼結法で接合して、炭素材−セラミック材接合体Gを作製した。
焼結助剤を用いなかったこと以外は、実施例5と同様にして、積層体を放電プラズマ焼結法で接合して、炭素材−セラミック材接合体Hを作製した。
2…炭素材−セラミック材接合体
10…炭素材
11…セラミックス層
12…セラミック材
Claims (9)
- 炭素材と、セラミック材とが接合された炭素材−セラミック材接合体の製造方法であって、
前記炭素材の上に、窒化アルミニウムを含むセラミックスと、少なくとも酸化イットリウムを含む焼結助剤とを含み、炭素材を含まないセラミックス層を形成し、焼結させることにより、前記セラミックス層を前記セラミック材にするとともに、前記焼結助剤を前記炭素材の表層の凹部または気孔に浸入させ、冷却して、前記焼結助剤を前記炭素材の表層に留まらせ、前記炭素材−セラミック材接合体を得る、炭素材−セラミック材接合体の製造方法。 - 炭素材と、セラミック材とが接合された炭素材−セラミック材接合体の製造方法であって、
前記炭素材の上に、炭化ケイ素を含むセラミックスと、少なくとも酸化イットリウム及び酸化アルミニウムを含む焼結助剤とを含み、炭素材を含まないセラミックス層を形成し、焼結させることにより、前記セラミックス層を前記セラミック材にするとともに、前記焼結助剤を前記炭素材の表層の凹部または気孔に浸入させ、冷却して、前記焼結助剤を前記炭素材の表層に留まらせ、前記炭素材−セラミック材接合体を得る、炭素材−セラミック材接合体の製造方法。 - 前記セラミックス及び/又は前記焼結助剤にケイ素元素が含まれ、前記焼結により、前記炭素材と前記セラミック材との界面に結晶相又は非晶質ガラス相を形成する、請求項1または2に記載の炭素材−セラミック材接合体の製造方法。
- 前記セラミックス及び前記焼結助剤を含む層における前記焼結助剤の含有量を、2質量%以上とする、請求項1〜3のいずれか1項に記載の炭素材−セラミック材接合体の製造方法。
- 前記炭素材として、製鋼用電極材、等方性黒鉛材、多孔質炭素材、炭素繊維集合体、炭素繊維複合材料、及び炭素繊維強化炭素複合材料からなる群から選択された少なくとも1種を用いる、請求項1〜4のいずれか1項に記載の炭素材−セラミック材接合体の製造方法。
- 炭素材と、
窒化アルミニウムを含み、炭素材を含まない、前記炭素材と接合されたセラミック材と、
を備え、
前記炭素材の前記セラミック材側の表層と、前記セラミック材の前記炭素材側の表層との両方に、前記セラミック材の焼結に用いられた少なくとも酸化イットリウムを含む焼結助剤が含まれている、炭素材−セラミック材接合体。 - 炭素材と、
炭化ケイ素を含み、炭素材を含まない、前記炭素材と接合されたセラミック材と、
を備え、
前記炭素材の前記セラミック材側の表層と、前記セラミック材の前記炭素材側の表層との両方に、前記セラミック材の焼結に用いられた少なくとも酸化イットリウム及び酸化アルミニウムを含む焼結助剤が含まれている、炭素材−セラミック材接合体。 - 前記炭素材の前記セラミック材側の表層における前記焼結助剤の含有量が、前記セラミック材の前記炭素材側の焼結助剤の含有量よりも高い、請求項6または7に記載の炭素材−セラミック材接合体。
- 前記炭素材と前記セラミック材との接合界面に、焼結により形成された結晶相又は非晶質ガラス相が設けられている、請求項6〜8のいずれか1項に記載の炭素材−セラミック材接合体。
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WO2021090759A1 (ja) * | 2019-11-05 | 2021-05-14 | 三菱マテリアル株式会社 | グラフェン含有炭素質部材/セラミックス接合体、および、銅/グラフェン含有炭素質部材/セラミックス接合体 |
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US20160023956A1 (en) * | 2014-07-28 | 2016-01-28 | The Curators Of The University Of Missouri | Ceramic-ceramic welds |
CN106431409A (zh) * | 2016-08-30 | 2017-02-22 | 湖北东方玉扬电子科技有限公司 | 刹车片打磨材料及其制备方法 |
CN107522487B (zh) * | 2017-07-07 | 2020-02-18 | 中国人民解放军国防科学技术大学 | 具有SiC掺杂层的石墨材料及其制备方法 |
CN109180211A (zh) * | 2018-09-14 | 2019-01-11 | 江苏安卡新材料科技有限公司 | 一种陶瓷表面改性方法 |
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WO2021090759A1 (ja) * | 2019-11-05 | 2021-05-14 | 三菱マテリアル株式会社 | グラフェン含有炭素質部材/セラミックス接合体、および、銅/グラフェン含有炭素質部材/セラミックス接合体 |
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