통합 검색 | Korea Science

오혜은
- ESCO지
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- 통권47호
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- pp.34-37
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- 2007
최근 국내최초로 저주파(250kHz) 구동용 전구형 200W 무전극램프가 개발됐다. 이는 국내에서뿐만 아니라 세계에서도 일본 마쓰시타와 거의 동시에 출시됨으로써 국내 조명기술의 우수성을 입증, 조명업계의 관심을 끌고 있다. 이 무전극램프를 개발한 곳은 LED조명, 전자식안정기뿐만 아니라 배전차단기, 개폐기 등 중전기기를 생산해 오고 있는 일진전기(대표 최진용). 조명업계 뿐만 아니라 ESCO 시장에서도 리딩컴퍼니로 도약하기 위해 노력하고 있는 일진전기를 찾았다.
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김영국;유재무;고재웅;정국채;김영준;한봉수
- 한국초전도ㆍ저온공학회논문지
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- 제8권1호
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- pp.15-18
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- 2006
A new precursor solution wilt low fluorine content was synthesized for MOD processing of coated conductors. In this study, the precursor solution for MOD processing was synthesized using F-free yttrium and copper precursor. It was shown that crack-free and uniform precursor films were formed after calcination in humidified oxygen atmosphere. Less than 2 hours were required to finish the calcination process. The relatively gradual weight loss during the calcination process is attributed to the feasibility of fast calcination profile. The calcined precursor film was converted to a YBCO film without any secondary phases after annealing in wet $Ar/O_2$ atmosphere. Fully converted film shows uniform microstructure and high critical current density. $(Jc=2.7MA/cm^2) $.
https://doi.org/10.9714/psac.2006.8.1.015 인용 PDF KSCI

정국채;유재무;고재웅;김영국
- 한국초전도ㆍ저온공학회논문지
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- 제8권1호
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- pp.23-25
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- 2006
Optimization of process variables, including oxygen and water partial pressure and also an nesting temperature, was performed in batch-type process to fabricate YBCO films on LaAlO3 single crystal. In this work, YBCO oxide powder was used as a starting precursor for metal-organic deposition(MOD)method. The precursor films were fabricated in batch furnace and they were converted to the epitaxial YBCO films at the same furnace with varying the process variables. The oxygen partial pressure was varied from 100ppm to 2000ppm and the water partial pressure from 1.2% to 12.2%. The window for optimal P(O2) was narrow about 700ppm for batch-type process. YBCO films in bathc-thype MOD process were optimized at 740-770oC and P(H2O) of 2.3%-7.3%.
https://doi.org/10.9714/psac.2006.8.1.023 인용 PDF KSCI