KR970042431A - 반응소결 세라믹스 및 이의 제조방법 - Google Patents

반응소결 세라믹스 및 이의 제조방법 Download PDF

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KR970042431A
KR970042431A KR1019960070858A KR19960070858A KR970042431A KR 970042431 A KR970042431 A KR 970042431A KR 1019960070858 A KR1019960070858 A KR 1019960070858A KR 19960070858 A KR19960070858 A KR 19960070858A KR 970042431 A KR970042431 A KR 970042431A
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쯔네유끼 가나이
구니히로 마에다
아끼오 치바
히로유끼 요시자와
모또유끼 미야타
유우이치 사와이
요시유끼 야스또미
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가나이 쯔도무
가부시키 가이샤 히다치 세사쿠쇼
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    • C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • C04B35/573—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide obtained by reaction sintering or recrystallisation
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/111—Fine ceramics
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/58—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides
    • C04B35/584—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride
    • C04B35/591—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on borides, nitrides, i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides or silicides based on silicon nitride obtained by reaction sintering
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
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Abstract

본 발명의 목적은 강도 및 파괴인성이 뛰어난 탄화규소, 질화규소, 알루미나계의 치미 세라믹스 및 이 세라믹스의 제조방법을 제공하는 것에 있다. 프리폼 내부에 화학반응이 일어나는 계면이 횡단적으로 존재하여, 국소적인 존 영역에서 화학반응을 진행시킴으로써, 상대밀도 95%이상이고, 매트릭스를 형성하는 금속원소의 잔류량이 1체적인 %인 것을 특징으로 하는 치밀 세라믹스를 제공한다.

Description

반응소결 세라믹스 및 이의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (13)

  1. 소결시에 화학반응에 의해 원료분말과는 다른 화합물을 생성시킨 반응소결 세라믹스에 있어서, 상기 세라믹스를 구성하는 결정립이 특정의 결정방위로 배향하고 그이 배향도가 폴 피겨법으로 측정한 F치로 0.5 이상히 극 또한 상기 세라믹스의 상대밀도 95% 이상, 소결체를 형성하는 조성 중의 원료조성의 잔류량이 1체적% 미만인 것을 특징으로 하는 반응소결 세라믹스.
  2. 제 l 항에 있어서, 특정의 결정방위가 상기 세라믹스가 판상결정이 되는 경우는, 우선결정 성장면의 정대축 또는 결정벽개면의 정대축이 배향축이고, 상기 세라믹스가 침상결정이 되는 경우는, 우선결정 성장방향이 배향축인 것을 특징으로 하는 반응소결 세라믹스.
  3. 제 2 항 기개의 반응소철 세라믹스가 탄화규소, 질화규소, 산화알루미늄중에서 선택된 일종이상이고, α탄화규소의 경우에는 배향축이 {10∼101}, 및/또는 {11∼10}, 및/또는 {0001}의 정대축이고, β탄화규소의 경우에는 {111}의 정대축 및/또는 〈110〉 방향이 배향축이고, 질화규소의 경우는 〈10∼10〉, 및/또는 〈10∼11〉 방향, 및/또는 〈11∼10〉, 및/또는 〈10∼13〉방향이 배향축이고, 산화알루미늄의 경우에는 {0001}, 및/또는 {11∼20}, 및/또는 [1-100]방향이 배향축, 및/또는 {0111}면의 정대축이 배향축인 것을 특징으로 하는 반응소결 세라믹스.
  4. 제 1 항 기재의 상기 가소결체가 아스펙트 비 10이상의 장섬유를 함유하는 것을 특징으로 하는 반응소결 세라믹스.
  5. 제 1 항 기재의 반웅소결 세라믹스를 사용한 가스터빈용의 동익, 정익, 연소기, 원자력 플랜드에서의 내마모용부재, 핵융합로용익 플라즈마 대향부재.
  6. 원로 분말입자를 혼합하고, 혼합분말을 제조하는 공정, 상기 흔할문말을 형성하는 공정, 얻어진 성형체를 열처리하여 가소결체로 하는 공정, 상기 가소결체에 최종제품의 세라믹스를 형성하는데 필요한 원소를 기상 또는 액상상태로 공급하고, 소결중에 화학반웅을 일으켜 제조하는 반옹소결 세라믹스의 제조방법에 있어서, 상기 화학반응을 부분적으로 일으키고, 또한 상기 화학반옹이 일어나고 있는 부분을 이동시켜서 상기 가소결채를 소결하는 것을 특징으로 하는 반응소결 세라믹스의 제조방법.
  7. 제 6 항에 있어서, 상기 가소결체의 적어도 일부를 포위하도록 설치된 로에 의해 상기 가소결체에 온도구배를 마련하고, 또한 상기 가소결체와 상기 노를 상대적으로 이동시키는 것을 특징으로 하는 반응소결 세라믹스의 제조방법.
  8. 제 7 항에 있어서, 상기 가소결체의 적어도 일부를 포위할 수 있게 마련된 로에 의해 그 가소결체애 온도구배를 마련하고, 온도구배가 5℃.cm 이상이고, 또한 상기 가소결채와 삼기 로를 상대적으로 이동시키는 상대적 1mm/h 부터 200 mm/h인 것을 특징으로 하는 반응소결 세라믹스의 제조방법.
  9. 제 6 항에 있어서, 적어도 탄화규소와 흑연을 함유하는 상기 가소결체를 사용하여, 실리콘을 공급하여 규소화반응에 의해 소결하는 것을 특징으로 하는 탄화규소 세라믹스의 제조방법.
  10. 제 6 항에 있어서, 적어도 실리콘을 함유하는 상기 가소결체를 사용하여, 질소가스를 공급하여 질화반응에 의해 소결하는 것을 특징으로 하는 질화규소 세라믹스의 제조방법.
  11. 제 6 항에 있어서, 적어도 알루미늄을 함유하는 상기 가소결체를 사용하여, 산소가스를 공급하여 산화반응에 의해 소결하는 것을 특징으로 하는 산화알루미늄 세라믹스의 제조방법.
  12. 제 11 항에 있어서, 상기 가소결체에 적어도 알루미늄, 알루미나, SiC를 함유시키는 것을 특징으로 하는 산화알루미늄 세라믹스의 제조방법.
  13. 제 6 항에 있어서, 상기 가소결체애 SiC, Si3N4, MoSi2, TiC,TiN, 알루미나(A12O3), 뮬라이트(3A12O3· 2SiO2), YAG(3Y2O3·5Al2O3), 스피넬(A12O3· MgO)의 군에서 선택된 일종이상의 물질을 함유시키는 것을 특징으로 하는 반응소결 세라믹스의 제조방밥.
KR1019960070858A 1995-12-26 1996-12-24 반응소결 세라믹스 및 이의 제조방법 KR970042431A (ko)

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JP7338506A JP2765543B2 (ja) 1995-12-26 1995-12-26 反応焼結セラミックス及びその製造方法
JP07-338506 1995-12-26

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BE1013287A5 (nl) * 2000-02-14 2001-11-06 Vito Keramische composiet schuimen met hoge mechanische sterkte.
CN1098231C (zh) * 2000-03-21 2003-01-08 中国科学院上海硅酸盐研究所 促进赛隆陶瓷烧结致密化的方法
JP2003026473A (ja) * 2001-05-08 2003-01-29 Murata Mfg Co Ltd セラミックの製造方法
JP2004107096A (ja) * 2002-09-13 2004-04-08 National Institute For Materials Science 配向性炭化ケイ素焼結体とその製造方法
CN100371298C (zh) * 2004-06-17 2008-02-27 株式会社电装 晶粒取向陶瓷及其制造方法
US8906522B2 (en) 2009-07-07 2014-12-09 Morgan Advanced Materials And Technology Inc. Hard non-oxide or oxide ceramic / hard non-oxide or oxide ceramic composite hybrid article
RU2511415C1 (ru) * 2012-09-17 2014-04-10 Максим Вячеславович Бушуев Керамический материал на основе карбида и нитрида кремния и способ изготовления из него изделий
CN112176412A (zh) * 2020-09-29 2021-01-05 陕西科技大学 一种原位自生弥散分布碳化物晶须预制体的制备方法
KR102510280B1 (ko) * 2021-01-14 2023-03-15 목포대학교산학협력단 고순도 및 고밀도 이트륨 알루미늄 가넷 소결체 및 이의 제조방법
CN113970644B (zh) * 2021-12-24 2022-05-27 天德瑞(北京)生物科技有限公司 基于hrp标记蛋白的工作浓度检测方法

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US4882306A (en) * 1986-09-16 1989-11-21 Lanxide Technology Company, Lp Method for producing self-supporting ceramic bodies with graded properties
DE3842965A1 (de) * 1988-12-21 1990-06-28 Bayer Ag Verfahren zur herstellung reaktionsgesinterter siliciumnitridkeramiken, so erhaltene siliciumnitridkeramik sowie deren verwendung
GB8925498D0 (en) * 1989-11-10 1989-12-28 Atomic Energy Authority Uk A method of producing a silicon carbide article

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DE19654182A1 (de) 1997-07-03

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