Investigation of Degree of Undercooling of Fe-O Alloy on Al2O3 Substrate

  • Choe, Joongkil
  • Kim, Han Gyeol
  • Kang, Youngjo
  • Lee, Joonho
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초록

An Fe-O drop of similar to 0.4 g in an alumina crucible was quenched from similar to 2200 K (similar to 1927 A degrees C) at a cooling rate of -87 K/s by flowing He gas at a flow rate of 25 L/min STP. A deep undercooling of approximately 200 K was obtained regardless the oxygen content in the sample. According to the classical nucleation theory, the contact angle between a solid Fe nuclei and the Al2O3 substrate was estimated to be 53 (+/- 4) deg.

키워드

FERRITIC STAINLESS-STEELOXYGEN PARTIAL PRESSURESINCLUSION REMOVALLIQUID-IRONSOLIDIFICATION STRUCTUREBUBBLE FLOTATIONSURFACE-TENSIONCONTACTTICRYSTALLIZATION
제목
Investigation of Degree of Undercooling of Fe-O Alloy on Al2O3 Substrate
저자
Choe, JoongkilKim, Han GyeolKang, YoungjoLee, Joonho
DOI
10.1007/s11663-014-0166-0
발행일
2014-10
유형
Article
저널명
Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
45
5
페이지
1589 ~ 1592