KR100594562B1 - 미세 분말 및 초미세 분말의 제조 방법과 그를 위한이송형 아크 플라스마 시스템 - Google Patents
미세 분말 및 초미세 분말의 제조 방법과 그를 위한이송형 아크 플라스마 시스템 Download PDFInfo
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- KR100594562B1 KR100594562B1 KR1020017002087A KR20017002087A KR100594562B1 KR 100594562 B1 KR100594562 B1 KR 100594562B1 KR 1020017002087 A KR1020017002087 A KR 1020017002087A KR 20017002087 A KR20017002087 A KR 20017002087A KR 100594562 B1 KR100594562 B1 KR 100594562B1
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- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
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- B01J12/00—Chemical processes in general for reacting gaseous media with gaseous media; Apparatus specially adapted therefor
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- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
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Abstract
Description
운전 변수 | 조건 | 결과 |
반응기 | 플라스마 기체 유속= 아르곤 40 ℓ/분, 수소 20 ℓ/분 전력= 24.5 kw 플라스마실 압력= 1.1 atm 희석 기체= 아르곤 85 ℓ/분, 온도>1000K 도가니 소재= 흑연 | 증기화 속도= 1.0kg/h 입자 크기 분포: 90% 이하(d90)=1.77㎛ 50% 이하(d50)=0.78㎛ 10% 이하(d10)=0.21㎛ (도 6a 및 도 7a 참조) 간격=(d90-d10)/d50=2.0 XRD 계수(2θ=43.3o) = 31300 |
급냉관 | 제1 구획 길이= 10 cm 내부관 직경= 5 cm 간접 냉각 기체= 아르곤 300 ℓ/분 제2 구획 직접 냉각= 질소 300 ℓ/분 | |
수집 | 다공성 금속 필터 |
운전 변수 | 조건 | 결과 |
반응기 | 플라스마 기체 유속= 아르곤 40 ℓ/분, 수소 20 ℓ/분 전력= 24.5 kw 플라스마실 압력= 1.1 atm 희석기체= 질소 85 ℓ/분, 온도>1000K 도가니 소재= 흑연 | 증기화 속도= 0.9kg/h 입자 크기 분포: 90% 이하(d90)=3.67㎛ 50% 이하(d50)=1.74㎛ 10% 이하(d10)=0.74㎛ (도 6b 참조) 간격=(d90-d10)/d50=1.7 XRD 계수(2θ=43.3o) = 30700 |
급냉관 | 제1 구획 길이= 25 cm 내부관 직경= 5 cm 간접 냉각 기체= 아르곤 200 ℓ/분 제2 구획 직접 냉각= 아르곤 300 ℓ/분 | |
수집 | 다공성 금속 필터 |
운전 변수 | 조건 | 결과 |
반응기 | 플라스마 기체 유속= 아르곤 40 ℓ/분, 수소 20 ℓ/분 전력= 24.5 kw 플라스마실 압력= 1.1 atm 희석 기체= 아르곤 20 l/min, 온도>1000K 도가니 소재= 흑연 | 증기화 속도= 0.9kg/h 입자 크기 분포: 90% 이하(d90)=2.91㎛ 50% 이하(d50)=0.81㎛ 10% 이하(d10)=0.25㎛ (도 7b 참조) 간격=(d90-d10)/d50=3.3 XRD 계수(2θ=43.3o) = 35800 |
급냉관 | 제1 구획 길이= 10 cm 내부관 직경= 5 cm 간접 냉각 기체= 아르곤 100 ℓ/분 제2 구획 직접 냉각= 질소 300 ℓ/분 | |
수집 | 다공성 금속 필터 |
운전 변수 | 조건 | 결과 |
반응기 | 플라스마 기체 유속= 아르곤 40 ℓ/분, 수소 20 ℓ/분 전력= 28 kw 플라스마실 압력= 1.1 atm 희석 기체= 아르곤 65 ℓ/분, 온도>1000K 도가니 소재= 흑연 | 증기화 속도= 0.5kg/h 입자 크기 분포: 90% 이하(d90)=1.42㎛ 50% 이하(d50)=0.79㎛ 10% 이하(d10)=0.45㎛ 간격=(d90-d10)/d50=1.22 XRD 계수(2θ=44.5o) = 24800 (도 8a 참조) |
급냉관 | 제1 구획 길이= 15 cm 내부관 직경= 2.5 cm 간접 냉각 기체= 아르곤 100 ℓ/분 제2 구획 직접 냉각= 아르곤 200 ℓ/분 | |
수집 | 다공성 금속 필터 |
운전 변수 | 조건 | 결과 |
반응기 | 플라스마 기체 유속= 아르곤 40 ℓ/분, 수소 20 ℓ/분 전력= 28 kw 플라스마실 압력= 1.1 atm 희석 기체= 아르곤 65 ℓ/분, 온도>1000K 도가니 소재= 흑연 | 증기화 속도= 0.5kg/h 입자크기 분포: 90% 이하(d90)=1.76㎛ 50% 이하(d50)=0.98㎛ 10% 이하(d10)=0.54㎛ 간격=(d90-d10)/d50=1.24 XRD 계수(2θ=44.5o) = 9300 (도 8b 참조) |
급냉관 | 제1 구획 길이= 15 cm 내부관 직경= 2.5 cm 간접 냉각 기체= 아르곤 300 ℓ/분 제2 구획 직접 냉각= 아르곤 200 ℓ/분 | |
수집 | 다공성 금속 필터 |
Claims (22)
- - 플라스마 반응기 내에 증기화 또는 분해시킬 재료를 제공하는 단계;- 플라스마 토치 공급 기체를 제공하는 단계;- 상기 재료와 전극 사이에 아크를 가하여 상기 재료를 증기화 또는 분해하여 그의 증기를 형성하기에 충분한 높은 온도의 플라스마를 발생시키는 단계;- 1000K 이상의 온도로 가열한 희석 기체를 플라스마 반응기 내에, 상기 플라스마 토치 공급 기체와 물리적으로 분리된 위치에서, 주입하는 단계;- 상기 증기를 플라스마 기체 및 희석 기체에 의해 급냉관(quench tube) 내로 수송하여 상기 증기를 응축시켜서 분말을 형성하는 단계 (여기서, 상기 급냉관은- 그 내부에 존재하는 증기 및 임의의 입자를 간접적으로 냉각 또는 가열하여 입자 성장 및 결정화를 조절하기 위한 제1 구획; 및- 상기 제1 구획에 연결되어 있으며 그 내부에 존재하는 증기 및 임의의 입자를 직접적으로 냉각시키기 위한 제2 구획을 포함한다); 및- 수집 유닛 내에서 분말 입자를 수집하고 임의로 여과하는 단계를 포함하는, 이송형 아크 플라스마 시스템을 이용한 미세 분말 및 초미세 분말의 제조 방법.
- 제1항에 있어서, 상기 급냉관은 그 본체가 관형인 방법.
- 제1항에 있어서, 상기 재료는 금속, 합금, 세라믹 및 복합소재를 포함하는 방법.
- 제1항에 있어서, 상기 증기화 또는 분해할 재료가 애노드이고, 전극이 캐소드이며 비소모성인 방법.
- 제1항에 있어서, 상기 재료를 전기 전도성 도가니 내로 제공하는 방법.
- 제1항에 있어서, 상기 재료를 고체 입자, 와이어, 막대(rod), 액체 또는 이들의 혼합물 형태로 플라스마 반응기 내로 공급하는 방법.
- 제6항에 있어서, 상기 도가니가 흑연, 탄화물, 산화물, 질화물, 붕화물 또는 내화 금속으로 제조된 것인 방법.
- 제2항에 있어서, 상기 간접 냉각 또는 가열을 본체 주위의 채널 내에서 냉각 또는 가열 유체를 순환시킴으로써 수행하는 방법.
- 제1항에 있어서, 반응제를 기체 형태로 1개 이상의 주입구를 통하여 급냉관의 제1 구획으로 주입하는 방법.
- 제1항에 있어서, 상기 직접 냉각을 증기 상으로 냉각 유체를 직접 주입하여 수행하는 방법.
- 삭제
- 제1항에 있어서, 증기화될 재료가 플라스마 반응기 내부에 있는 전기 전도성 도가니에 연속적으로 공급되는 금속이고, 상기 급냉관은- 그 내부에 존재하는 증기 및 임의의 입자를 간접적으로 냉각 또는 가열하여 입자의 성장 및 결정화를 조절하기 위한 관형의 본체를 포함하는 제1 구획 (여기서, 증기는 상기 본체 내부를 통과한다); 및- 상기 제1 구획에 연결되어 있으며 증기 상으로 직접 냉각 유체를 주입하여 그 내부에 존재하는 증기 및 임의의 입자를 직접적으로 냉각시키는 제2 구획을 포함하는 방법.
- 제12항에 있어서, 상기 금속이 은, 금, 카드뮴, 코발트, 구리, 철, 몰리브덴, 니켈, 니오븀, 팔라듐, 백금, 로듐, 루테늄, 탄탈, 티탄, 텅스텐, 지르코늄 및 이들의 합금을 포함하는 방법.
- 삭제
- 삭제
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US09/136,043 US6379419B1 (en) | 1998-08-18 | 1998-08-18 | Method and transferred arc plasma system for production of fine and ultrafine powders |
US09/136,043 | 1998-08-18 |
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US (1) | US6379419B1 (ko) |
EP (1) | EP1115523B1 (ko) |
JP (3) | JP3541939B2 (ko) |
KR (1) | KR100594562B1 (ko) |
AT (1) | ATE240177T1 (ko) |
AU (1) | AU5275299A (ko) |
CA (1) | CA2340669C (ko) |
DE (1) | DE69907933T2 (ko) |
WO (1) | WO2000010756A1 (ko) |
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KR100840229B1 (ko) | 2006-09-08 | 2008-06-23 | 재단법인 포항산업과학연구원 | 초미세 솔더 분말, 초미세 솔더 분말의 제조방법 및 그제조장치 |
KR101009656B1 (ko) | 2008-09-17 | 2011-01-19 | 희성금속 주식회사 | 초미세 귀금속 분말 제조방법 |
KR101024971B1 (ko) | 2008-12-12 | 2011-03-25 | 희성금속 주식회사 | 열플라즈마를 이용한 귀금속 분말 및 귀금속 타겟 제조방법 |
KR101193683B1 (ko) | 2010-03-29 | 2012-10-22 | 현대제철 주식회사 | 지르코늄 코어드 와이어 투입법을 이용한 지르코늄 함유 철계 합금 제조 방법 및 그 제조 장치 |
KR101408238B1 (ko) * | 2011-12-01 | 2014-06-16 | 소에이 가가쿠 고교 가부시키가이샤 | 금속분말 제조용 플라즈마 장치 |
KR102465825B1 (ko) * | 2022-09-06 | 2022-11-09 | 이용복 | 열플라즈마를 이용한 금속분말 제조장치 및 그 제조방법 |
Also Published As
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EP1115523B1 (en) | 2003-05-14 |
JP2004036005A (ja) | 2004-02-05 |
ATE240177T1 (de) | 2003-05-15 |
KR20010099622A (ko) | 2001-11-09 |
JP2005163188A (ja) | 2005-06-23 |
US6379419B1 (en) | 2002-04-30 |
JP2002530521A (ja) | 2002-09-17 |
JP3541939B2 (ja) | 2004-07-14 |
DE69907933T2 (de) | 2004-04-01 |
EP1115523A1 (en) | 2001-07-18 |
CA2340669A1 (en) | 2000-03-02 |
AU5275299A (en) | 2000-03-14 |
DE69907933D1 (de) | 2003-06-18 |
WO2000010756A1 (en) | 2000-03-02 |
CA2340669C (en) | 2009-04-07 |
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