KR100695046B1 - 초미립자 취성재료의 저온성형방법 및 그것에 사용하는초미립자 취성재료 - Google Patents
초미립자 취성재료의 저온성형방법 및 그것에 사용하는초미립자 취성재료 Download PDFInfo
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
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Abstract
Description
원자수 비율 | ||||
충격 처리 시간 (h) 원료 미립자의 전처리 내용 | Zr/Ti | (Zr+Ti)/Pb | O/Pb | |
기계적 충격 처리만 실시한 경우 | 0 5 30 | 1.08 1.085 1.09 | 0.99 1.02 1.03 | 1.41 1.43 1.45 |
기계적 충격 처리와 열처리를 병용한 경우 | 0 5 | 1.09 1.08 | 1.01 1.01 | 1.56 1.51 |
PZT 의 벌크체 | 1.0889 | 1.0 | 1.5 |
Claims (14)
- 초미립자 취성 재료에 기계적 충격력 또는 압력을 인가하여 1 차 입자 직경이 50nm 보다 작은 초미립자 취성 재료가 전체 입자에서 차지하는 개수에서의 비율을 10%∼90% 로 하고, 그 초미립자 취성 재료의 소결 온도 이하인 200℃~1200℃ 범위의 온도에서 열처리를 실시하고, 상기 열처리를 통해 1 차 입자 직경이 50nm 보다 작은 열처리된 초미립자 취성 재료의 전체 입자에서 차지하는 개수에서의 비율을 50% 이하로 감소시키고, 그 후 상기 열처리된 초미립자 취성 재료에 파쇄면을 형성하기 위한 입자 충돌에 의하여 상기 열처리된 초미립자 취성 재료에 그 파괴 강도 이상의 크기의 기계적 충격력을 인가함으로써 상기 파쇄면에서 얻어진 각각의 초미립자 취성 재료끼리를 접합시켜 초미립자 취성 재료로 이루어진 입자를 얻는 각 공정을 포함하여 이루어지는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 제 1 항에 있어서, 상기 기계적 충격력 또는 압력 인가 공정에 제공하기 전의 초미립자 취성 재료의 평균 1 차 입자 직경을 50nm∼5μm 로 하는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 삭제
- 제 1 항에 있어서, 초미립자 취성 재료의 열처리를 공기 중, 산화 분위기 속, 또는 환원 분위기 속에서 실시하는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 제 1 항에 있어서, 초미립자 취성 재료의 열처리를 반응성 가스 분위기 속에서 실시하는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 제 1 항에 있어서, 초미립자 취성 재료의 열처리 시간을 30 분 이내로 하는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 제 1 항에 있어서, 초미립자 취성 재료에 대한 기계적 충격력 또는 압력 인가를 건조 분위기 속에서 실시하는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 제 1 항에 있어서, 성형 공정을 에어러졸 디포지션법에 의해 실시하는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 제 1 항에 있어서, 초미립자 취성 재료에 대한 기계적 충격력 또는 압력 인가가 분쇄기에 의해 이루어지는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 제 1 항에 있어서, 상기 초미립자 취성 재료로서, 1 차 입자 직경이 50nm 이상인 초미립자 취성 재료로서, 1 차 입자 직경이 50nm 보다 작은 초미립자 취성 재료를 상기 1 차 입자 직경이 50nm 이상인 초미립자 취성 재료의 표면에 갖지 않는 초미립자 취성 재료를 사용하는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 제 1 항에 있어서, 결정 입자 직경 20nm 이상 1μm 이하의 미세 결정으로 이루어지는 1 차 입자 직경 50nm 이상 5μm 이하의 다결정 구조를 갖는 초미립자 취성 재료를 사용하는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 제 1 항 내지 제 11 항 중 어느 한 항에 있어서, 상기 성형 공정에서, 상기 열처리 후에 건조시킨 초미립자 취성 재료를 가스와 혼합하여, 노즐을 통해서 기판에 내뿜어 상기 초미립자 취성 재료를 파쇄하여 초미립자 취성 재료끼리를 접합시켜 초미립자 취성 재료로 이루어진 입자를 얻는 것을 특징으로 하는 초미립자 취성 재료로부터의 입자 성형 방법.
- 1 차 입자 직경이 50nm 이상인 초미립자 취성 재료로서, 1 차 입자 직경이 50nm 보다 작은 초미립자 취성 재료를 상기 1 차 입자 직경이 50nm 이상인 초미립자 취성 재료의 표면에 갖지 않는 것을 특징으로 하는 초미립자 취성 재료로 이루어지는 에어로졸 디포지션 성형용 입자.
- 결정 입자 직경 20nm 이상 1μm 이하의 미세 결정으로 이루어지는 1 차 입자 직경 50nm 이상 5μm 이하의 다결정 구조를 갖는 것을 특징으로 하는 초미립자 취성 재료로 이루어지는 에어로졸 디포지션 성형용 입자.
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PCT/JP2003/006640 WO2003100131A1 (en) | 2002-05-28 | 2003-05-28 | Method for forming ultrafine particle brittle material at low temperature and ultrafine particle brittle material for use therein |
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US9079209B2 (en) | 2010-10-08 | 2015-07-14 | Ok Ryul Kim | Apparatus for power coating |
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US9079209B2 (en) | 2010-10-08 | 2015-07-14 | Ok Ryul Kim | Apparatus for power coating |
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TW200401048A (en) | 2004-01-16 |
KR20050010841A (ko) | 2005-01-28 |
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US20050181208A1 (en) | 2005-08-18 |
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US7658996B2 (en) | 2010-02-09 |
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TWI330672B (en) | 2010-09-21 |
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