발간논문

Home > KJMM 논문 > 발간논문

Vol.39, No.2, 232 ~ 241, 2001
Title
Effect of Surface Active Elements on Reaction Mechanism of Nitrogen Absorption of Pure Iron and Fe - Cr Melt in Melting Process by Ar Plasma Arc
김영진Young Jin Kim,이광학Kwang Hak Lee,김영홍Yung Hong Kim
Abstract
The effect of surface active elements an reaction mechanism of nitrogen absorption of iron melts were investigated in the iron melting process using Ar plasma arc. Because change of rate constant according to increasing Ar gas flowrate is very small, mass transfer in gas and liquid phase is not affect to kinetics of nitrogen absorption of the melt. Cr in melt increases reaction rate of nitrogen absorption by decreasing activity of nitrogen in melt. With increasing the content of surface active elements in the melts, the solubility and reaction rate of nitrogen absorption for both melts have increased and this phenomenon is also shown similarly in alloy. Therefore, the rate controlling step for nitrogen absorption is the dissolution reaction step into the iron melts of adsorbed nitrogen atom in chemical reaction of the interface between gas and melts phase.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.