Journal of Korea Foundry Society (한국주조공학회지)
- Volume 14 Issue 6
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- Pages.520-529
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- 1994
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- 1598-706X(pISSN)
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- 2288-8381(eISSN)
Effect of Sulphur on the Nucleation Behavior of Graphite Crystals
흑연결정의 핵생성에 미치는 미량 유황의 영향
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Kim, Young-Jig
(Dept. of Metall. Eng., Sung Kyun Kwan Univ.)
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김영직
(성균관대학교 금속공학과)
- Published : 1994.12.30
Abstract
This study describes the influence of the trace amount of sulphur on the nucleation behavior of graphite crystals in high purity Fe-C-Si alloys prepared by levitation melting method. Detailed microstructural analyses of high purity(HP) and sulphur added(HP+S) samples showed that the nucleation of graphite crystals was prevented by sulphur. With decreasing the sulphur content, the shape of graphite crystals tended to spherulitic, and below 2ppm S, that of graphite crystals was only nodular. The critical cooling rate for the nucleation of griphite crystals was calculated as
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