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A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCING POROUS SILICON CARBIDE SINTERED COMPACT, AND POROUS SILICON CARBIDE SINTERED COMPACT HAVING PROTECTIVE LAYER
PROBLEM TO BE SOLVED: To provide a method for producing a porous SiC sintered compact, which can allow an original SiC sintered compact to have a targeted pore diameter surely and easily and be produced at a low cost.SOLUTION: The method for producing the porous SiC sintered compact comprises the steps of: mixing an organic micro balloon 10 with silicon powder 11 at such a mixing ratio that a molar ratio of silicon becomes less to obtain a base stock 12 to be compact; firing a compact 14, which is obtained by compacting the base stock 12 to be compact, in a non-oxidizing atmosphere at the carbonization temperature to form a carbonized skeleton body 17; heating the carbonized skeleton body 17 up to such sintering temperature, that reaction sintering is performed between the carbonized skeleton body 17 and silicon, to obtain a semi-finished sintered compact 1A containing residual carbon; and sintering/decarbonizing the semi-finished sintered compact 1A in the air to obtain the porous SiC sintered compact having many open pores in a dispersedly-arranged state.
【課題】ＳｉＣ焼結体において、確実で簡単に目標値とする気孔径を得ることができ、しかも低コスト化を図れる多孔質ＳｉＣ焼結体の提供。【解決手段】有機マイクロバルーン１０とシリコン粉末１１とをシリコンのモル比が少なくなる配合で混合して成形素材１２を得、成形素材１２から成形した成形体１４を非酸化性雰囲気中にて炭化温度で焼成して炭化骨格体１７に形成し、炭化骨格体１７をシリコンと反応焼結を起こす焼成温度まで昇温することで残留カーボンを含んだ半完成焼結体１Ａとし、半完成焼結体１Ａを空気中にて焼成して脱炭させることにより多数の開気孔を分散配置状に有した多孔質ＳｉＣ焼結体とする多孔質ＳｉＣ焼結体。【選択図】図１
METHOD FOR PRODUCING POROUS SILICON CARBIDE SINTERED COMPACT, AND POROUS SILICON CARBIDE SINTERED COMPACT HAVING PROTECTIVE LAYER
PROBLEM TO BE SOLVED: To provide a method for producing a porous SiC sintered compact, which can allow an original SiC sintered compact to have a targeted pore diameter surely and easily and be produced at a low cost.SOLUTION: The method for producing the porous SiC sintered compact comprises the steps of: mixing an organic micro balloon 10 with silicon powder 11 at such a mixing ratio that a molar ratio of silicon becomes less to obtain a base stock 12 to be compact; firing a compact 14, which is obtained by compacting the base stock 12 to be compact, in a non-oxidizing atmosphere at the carbonization temperature to form a carbonized skeleton body 17; heating the carbonized skeleton body 17 up to such sintering temperature, that reaction sintering is performed between the carbonized skeleton body 17 and silicon, to obtain a semi-finished sintered compact 1A containing residual carbon; and sintering/decarbonizing the semi-finished sintered compact 1A in the air to obtain the porous SiC sintered compact having many open pores in a dispersedly-arranged state.
【課題】ＳｉＣ焼結体において、確実で簡単に目標値とする気孔径を得ることができ、しかも低コスト化を図れる多孔質ＳｉＣ焼結体の提供。【解決手段】有機マイクロバルーン１０とシリコン粉末１１とをシリコンのモル比が少なくなる配合で混合して成形素材１２を得、成形素材１２から成形した成形体１４を非酸化性雰囲気中にて炭化温度で焼成して炭化骨格体１７に形成し、炭化骨格体１７をシリコンと反応焼結を起こす焼成温度まで昇温することで残留カーボンを含んだ半完成焼結体１Ａとし、半完成焼結体１Ａを空気中にて焼成して脱炭させることにより多数の開気孔を分散配置状に有した多孔質ＳｉＣ焼結体とする多孔質ＳｉＣ焼結体。【選択図】図１
METHOD FOR PRODUCING POROUS SILICON CARBIDE SINTERED COMPACT, AND POROUS SILICON CARBIDE SINTERED COMPACT HAVING PROTECTIVE LAYER
多孔質ＳｉＣ焼結体の製造方法及び保護層を備えた多孔質ＳｉＣ焼結体
KONISHI NORIFUMI (author) / MAEDA SUSUMU (author)
2015-11-19
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2024
SINTERED COMPACT OF SILICON CARBIDE AND PRODUCING METHOD THEREOF
| European Patent Office | 2015