AlN 분말의 고에너지 밀링에 따른 소결체의 절연 특성
(주)코리아스칼라
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- 2023.04.05
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- 2017.12
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서지정보
ㆍ발행기관 : 한국분말야금학회
ㆍ수록지정보 : 한국분말야금학회지 / 24권 / 6호
ㆍ저자명 : 류성수, 이성민
목차
1. 서 론
2. 실험 방법
3. 결과 및 고찰
4. 결 론
감사의 글
References
영어 초록
Aluminum nitride (AlN) powder specimens are treated by high-energy bead milling and then sintered at various temperatures. Depending on the solvent and milling time, the oxygen content in the AlN powder varies significantly. When isopropyl alcohol is used, the oxygen content increases with the milling time. In contrast, hexane is very effective at suppressing the oxygen content increase in the AlN powder, although severe particle sedimentation after the milling process is observed in the AlN slurry. With an increase in the milling time, the primary particle size remains nearly constant, but the particle agglomeration is reduced. After spark plasma sintering at 1400℃, the second crystalline phase changes to compounds containing more Al2O3 when the AlN raw material with an increased milling time is used. When the sintering temperature is decreased from 1750℃ to 1400℃, the DC resistivity increases by approximately two orders of magnitude, which implies that controlling the sintering temperature is a very effective way to improve the DC resistivity of AlN ceramics.
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