KR970702226A - 마이크로파 소결 방법(microwave sintering process) - Google Patents
마이크로파 소결 방법(microwave sintering process)Info
- Publication number
- KR970702226A KR970702226A KR1019960705408A KR19960705408A KR970702226A KR 970702226 A KR970702226 A KR 970702226A KR 1019960705408 A KR1019960705408 A KR 1019960705408A KR 19960705408 A KR19960705408 A KR 19960705408A KR 970702226 A KR970702226 A KR 970702226A
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- susceptor
- microwave
- sintered
- layer
- alumina
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B35/117—Composites
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B35/581—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 aluminium nitride
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Ceramic Products (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
본 발명은 세라믹, 세라믹 복합체 및 금속 분말을 소결시키는데 유용한 마이크로파 서셉터 층에 관한 것이다. 서셉터 층은 다량의 마이크로파 서셉터 재료, 및 서셉터 재료에 분산되거나 또는 서셉터 재료상의 피복제로서 제공된 소량의 내화성 이형제로 이루어진다. 탄소는 가장 바람직한 이형제이다. 본 발명은 상기 층을 사용하는 소결방법 및 이에 의해 제조된 규소 질화물 생성물까지 포함한다.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 소결시키려는 공정 제품을 둘러싸고 있는 과립상 마이크로파 서셉터층을 보여주는, 본 발명의 조립된, 절연성 마이크로파 서셉터층의 수직 단면도,
제2도는 소결후에, 자유 유동하는 과립상 마이크로파 서셉터층중의 공정 제품의 수축을 보여주는, 제1도에서와 같은 단면도,
제3도는 세라믹 공정 제품이 과립상 마이크로파 서셉터 층중의 내부 도가니내에 하우징되는 조립된 절연성 마이크로파 서셉터 층의 수직 단면도,제4도는 3개의 일반적으로 이용될 수 있는 규소 질화물 공구(아래의 3개 라인)에 대한 본 발명의 방법에 따른 규소질화물 공구(위의의 라인)과 비교하여, 절단 웨어 성능 시험에 있어 제거된 캐스트 철 재료에 대한 플랭크 웨어(flank wear)를 플롯한 도면이다.
Claims (29)
- 재료를 과립상 서셉터층으로 둘러싸고, 재료 주위로 보호성 기계를 유동시키고, 재료 및 층을 마이크로파 에너지로 조사시키는 것으로 이루어지는, 세라믹, 세라믹 복합체 또는 금속 재료를 소결시키는 방법으로서, 상기 층이 (a) 다량의 마이크로파 서셉터 재료, 및 (b) 서셉터 재료에 분산되어 있거나 또는 서셉터 재료상의 피복제로서 소량의 내화성 이형제로 이루어지는 방법.
- 제1항에 있어서, 마이크로파 서셉터 재료가 소결시키려는 재료를 소결시시기 위해 필요한 온도까지 마이크로파 서셉터인 세라믹임을 특징으로 하는 방법.
- 제1항에 있어서, 서셉터 재료가 알루미나, 지르고니아, 트리아 또는 이것들의 혼합물로 구성된 군으로부터 선택됨을 특징으로 하는 방법.
- 제3항에 있어서, 이형제가 탄소, 올리브덴 이황화물, 규소 탄화물 및 지르고니아로 구성된 군으로부터 선택됨을 특징으로 하는 방법.
- 제1항에 있어서, 서셉터 재료가 알루미나이고, 이형제가 탄소임을 특징으로 하는 방법.
- 제5항에 있어서, 알루미나가 약 90 내지 98중량%의 양으로 포함되고, 탄소가 약 2 내지 10중량%의 양으로 포함됨을 특징으로 하는 방법.
- 제1항에 있어서, 마이크로파 서셉터층의 과립의 크기가 약 500미크론 내지 10㎜임을 특징으로 하는 방법.
- 제1항에 있어서, 마이크로파 서셉터층의 과립의 크기가 약 0.5 내지 3㎜임을 특징으로 하는 방법.
- 제6항에 있어서, 마이크로파 서셉터층의 과립의 크기가 약 0.5 내지 3㎜임을 특징으로 하는 방법.
- 제1항에 있어서, 소결시키려는 재료가 과립 서셉터층 사이에 삽입되며, 보호성 기체가 층내로의 유동 기체로서 도입됨을 특징으로 하는 방법.
- 제9항에 있어서, 소결시키려는 재료가 과립 서셉터층 사이에 삽입되며, 보호성 기체가 층내로의 유동기체로서 도입됨을 특징으로 하는 방법.
- 제1항에 있어서, 소결시키려는 재료가 규소 질화물이고, 마이크로파 에너지가 1시간 미만 동안 약 1600내지 1850℃에서 유지될 정도로 가해짐을 특징으로 하는 방법.
- 제8항에 있어서, 재료가 약 30분 미만 동안 1600 내지 1850℃에서 유지됨을 특징으로 하는 방법.
- 제11항에 있어서, 소결시키려는 재료가 규소 질화물이고, 마이크로파 에너지가 1시간 미만 동안 약 1600 내지 1850C에서 유지될 정도로 가해짐을 특징으로 하는 방법.
- 제12항에 있어서, 기체가 질소임을 특징으로 하는 방법.
- 제14항에 있어서, 기체가 질소임을 특징으로 하는 방법.
- (a)다량의 마이크로파 서셉터 재료, 및 (b)서셉터 재료에 분산되어 있거나 또는 서셉터 재료상의 피복제로서 제공되는 소량의 내화성 이형제로 이루어지는 마이크로파 소결층.
- 제17항에 있어서, 마이크로파 서셉터 재료가 소결시키려는 재료를 소결시키기 위해 필요한 온도까지 마이크로파 서셉터인 세라믹임을 특징으로 하는 방법.
- 제17항에 있어서, 서셉터 재료가 알루미나, 지르코니아, 토리아 또는 이것들의 혼합물로 구성된 군으로부터 선택됨을 특징으로 하는 방법.
- 제19항에 있어서, 이형제가 탄소, 몰리브덴 이황화물, 규소 탄화물 및 지르고니아로 구성된 군으로부터 선택됨을 특징으로 하는 방법.
- 제17항에 있어서, 서셉터 재료가 알루미나이고, 이형제가 탄소임을 특징으로 하는 방법.
- 제21항에 있어서, 알루미나가 약 90 내지 98중량%의 양으로 포함되고, 탄소가 약 2 내지 10중량%의 양으로 포함됨을 특징으로 하는 방법.
- 제17항에 있어서, 마이크로파 서셉터층의 과립의 크기가 약 500미크론 내지 10㎜임을 특징으로 하는 방법.
- 제17항에 있어서, 마이크로과 서셉터층의 과립의 크기가 약 0.5 내지 3㎜임을 특징으로 하는 방법.
- 제22항에 있어서, 마이크로파 서셉터층의 과립의 크기가 약 0.5 내지 3㎜임을 특징으로 하는 방법.
- (a)이론적 밀도의 95% 이상의 밀도 ; (b)직경이 약 1 미크론 미만이고 길이가 약 5미크론. 미만인 미세그레인; 및 (c)광 회색 보다 어둡지 않은 색을 갖는 것을 특징으로 하는 소결된 규소 질화물로 이루어진 소결된 규소 질화물 생성물.
- 제26항에 있어서, 밀도가 이론치의 98% 이상임을 특징으로 하는 소결된 규소 질화물 생성물.
- 제27항에 있어서, 규소 분해 생성물의 양이 0.001% 미만임을 특징으로 하는 규소 질화물 생성물.
- 제26항에 있어서, 그레인이 직경이 0.2 내지 0.8 미크론이고, 길이가 1 내지 3미크론 미만임을 특징으로 하는 규소 질화물 생성물.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22084094A | 1994-03-31 | 1994-03-31 | |
US08/220,840 | 1994-03-31 | ||
US8/220,840 | 1994-03-31 | ||
PCT/CA1995/000172 WO1995026940A1 (en) | 1994-03-31 | 1995-03-24 | Microwave sintering process |
Publications (2)
Publication Number | Publication Date |
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KR970702226A true KR970702226A (ko) | 1997-05-13 |
KR100226807B1 KR100226807B1 (ko) | 1999-10-15 |
Family
ID=22825200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960705408A KR100226807B1 (ko) | 1994-03-31 | 1995-03-24 | 마이크로파 소결 방법 |
Country Status (9)
Country | Link |
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US (3) | US5736092A (ko) |
EP (1) | EP0752979B1 (ko) |
JP (1) | JPH09510950A (ko) |
KR (1) | KR100226807B1 (ko) |
AT (1) | ATE181720T1 (ko) |
AU (1) | AU2064595A (ko) |
CA (1) | CA2124093C (ko) |
DE (1) | DE69510541T2 (ko) |
WO (1) | WO1995026940A1 (ko) |
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-
1994
- 1994-05-18 CA CA002124093A patent/CA2124093C/en not_active Expired - Lifetime
-
1995
- 1995-03-24 JP JP7525318A patent/JPH09510950A/ja active Pending
- 1995-03-24 EP EP95912990A patent/EP0752979B1/en not_active Expired - Lifetime
- 1995-03-24 WO PCT/CA1995/000172 patent/WO1995026940A1/en active IP Right Grant
- 1995-03-24 DE DE69510541T patent/DE69510541T2/de not_active Expired - Fee Related
- 1995-03-24 AT AT95912990T patent/ATE181720T1/de not_active IP Right Cessation
- 1995-03-24 AU AU20645/95A patent/AU2064595A/en not_active Abandoned
- 1995-03-24 KR KR1019960705408A patent/KR100226807B1/ko not_active IP Right Cessation
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1996
- 1996-06-17 US US08/664,811 patent/US5736092A/en not_active Expired - Lifetime
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1997
- 1997-02-10 US US08/798,051 patent/US5874377A/en not_active Expired - Lifetime
- 1997-04-28 US US08/848,018 patent/US5808282A/en not_active Expired - Lifetime
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JPH09510950A (ja) | 1997-11-04 |
CA2124093A1 (en) | 1995-10-01 |
WO1995026940A1 (en) | 1995-10-12 |
US5736092A (en) | 1998-04-07 |
EP0752979B1 (en) | 1999-06-30 |
DE69510541D1 (de) | 1999-08-05 |
KR100226807B1 (ko) | 1999-10-15 |
EP0752979A1 (en) | 1997-01-15 |
AU2064595A (en) | 1995-10-23 |
ATE181720T1 (de) | 1999-07-15 |
US5808282A (en) | 1998-09-15 |
CA2124093C (en) | 2001-04-17 |
DE69510541T2 (de) | 1999-11-18 |
US5874377A (en) | 1999-02-23 |
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