KR102432509B1 - 복합 소결체, 반도체 제조 장치 부재 및 복합 소결체의 제조 방법 - Google Patents
복합 소결체, 반도체 제조 장치 부재 및 복합 소결체의 제조 방법 Download PDFInfo
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- KR102432509B1 KR102432509B1 KR1020207022680A KR20207022680A KR102432509B1 KR 102432509 B1 KR102432509 B1 KR 102432509B1 KR 1020207022680 A KR1020207022680 A KR 1020207022680A KR 20207022680 A KR20207022680 A KR 20207022680A KR 102432509 B1 KR102432509 B1 KR 102432509B1
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Abstract
Description
도 2는 척 본체의 제조의 흐름을 도시한 도면이다.
도 3은 복합 소결체의 연마면의 SEM 화상이다.
도 4는 복합 소결체의 연마면의 SEM 화상이다.
도 5는 복합 소결체의 X선 회절 패턴이다.
도 6은 복합 소결체의 X선 회절 패턴의 확대도이다.
도 7은 복합 소결체의 원소 맵핑상이다.
도 8은 복합 소결체에 대해 원소 맵핑을 행한 결과를 도시한 도면이다.
도 9는 복합 소결체에 대해 원소 맵핑을 행한 결과를 도시한 도면이다.
도 10은 복합 소결체에 대해 원소 맵핑을 행한 결과를 도시한 도면이다.
23: 척 본체 24: 내부 전극
S11∼S12: 단계
Claims (19)
- 복합 소결체로서,
산화알루미늄과,
탄화규소와,
스피넬형 결정 구조를 갖는 마그네슘-알루미늄 복합 산화물
을 구비하고,
상기 탄화규소는 β형 탄화규소를 포함하며,
상기 탄화규소의 입경에 대해, D50이 0.7 ㎛ 이상이고,
상기 탄화규소 중의 탄소의 상기 복합 소결체에 대한 비율이, 1.0 중량% 이상 또한 4.0 중량% 이하인 것인 복합 소결체. - 제1항에 있어서, 상기 마그네슘-알루미늄 복합 산화물 중의 마그네슘의 상기 복합 소결체에 대한 비율이, 0.01 중량% 이상 또한 1.0 중량% 이하인 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 폐기공률(閉氣孔率)이 1.0% 이하인 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 상기 탄화규소의 입경에 대해, D10이 0.3 ㎛ 이상인 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 상기 탄화규소의 입경에 대해, D90이 1.5 ㎛ 이상인 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 상기 탄화규소 중의 β형 탄화규소의 함유율은 50%보다 큰 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 상기 산화알루미늄의 소결 입경에 대해, 평균 입경이 2 ㎛ 이상인 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 내전압이 25 ㎸/㎜ 이상인 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 주파수 40 ㎐ 및 주파수 1 ㎒에 있어서의 유전 정접이 1.0×10-2 이하인 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 주파수 40 ㎐ 및 주파수 1 ㎒에 있어서의 비유전율이 12 이상인 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 온도 25℃에 있어서의 체적 저항률이 1.0×1015 Ω㎝ 이상인 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 4점 굽힘 강도가 450 ㎫ 이상인 것인 복합 소결체.
- 제1항 또는 제2항에 있어서, 개기공률(開氣孔率)은 0.1% 이하인 것인 복합 소결체.
- 반도체 제조 장치에 있어서 사용되는 반도체 제조 장치 부재로서,
제1항 또는 제2항에 기재된 복합 소결체를 이용하여 제조되어 있는 반도체 제조 장치 부재. - 제14항에 있어서,
상기 복합 소결체를 이용하여 제조된 척 본체와 이 척 본체의 내부에 배치되는 내부 전극을 구비하는 정전 척인 반도체 제조 장치 부재. - 복합 소결체의 제조 방법으로서,
a) 산화알루미늄과 탄화규소와 산화마그네슘을 혼합한 혼합 분말을 미리 정해진 형상의 성형체로 성형하는 공정과,
b) 상기 성형체를 소성하여 복합 소결체를 생성하는 공정
을 구비하고,
상기 탄화규소는 β형 탄화규소를 포함하며,
상기 a) 공정에 있어서, 상기 혼합 분말 중의 상기 탄화규소의 비율이, 4.0 중량% 이상 또한 13.0 중량% 이하이고,
상기 a) 공정에 있어서의 산화알루미늄의 순도는, 99.9% 이상인 것인 복합 소결체의 제조 방법. - 제16항에 있어서, 상기 a) 공정에 있어서, 상기 혼합 분말 중의 상기 산화마그네슘의 비율이, 0.05 중량% 이상 또한 1.0 중량% 이하인 것인 복합 소결체의 제조 방법.
- 제16항 또는 제17항에 있어서, 상기 a) 공정에 있어서의 상기 탄화규소의 원료 입경에 대해, D10이 0.3 ㎛ 이상이고, D50이 1 ㎛ 이상이며, 또한, D90이 2 ㎛ 이상인 것인 복합 소결체의 제조 방법.
- 제16항 또는 제17항에 있어서, 상기 b) 공정 종료 후의 상기 산화알루미늄의 소결 입경에 대해, 평균 입경이 2 ㎛ 이상인 것인 복합 소결체의 제조 방법.
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JP2000034174A (ja) | 1998-07-17 | 2000-02-02 | Sumitomo Electric Ind Ltd | セラミックス複合材料の製造方法 |
JP2001287982A (ja) | 2000-04-05 | 2001-10-16 | Sumitomo Osaka Cement Co Ltd | サセプタ及びその製造方法 |
JP2006193353A (ja) * | 2005-01-12 | 2006-07-27 | Ngk Spark Plug Co Ltd | アルミナ焼結体、切削インサートおよび切削工具 |
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