Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403

공학

한국표면공학회지 (25권4호 161-164)

Thermodynamics of Simultaneous Chromizing and Aluminizing of the Mild Steel

연강에 Cr과 Al의 동시 확산 침투 피복의 열역학적 연구

김선규;신원순;

울산대학교 공과대학 금속공학과;대우조선 국민차 사업본부 기술 연구실;

Abstract

Thermodynamic calculations were made to find an optimum condition of simultaneous chromizing and aluminizing of mild steel. Results of calculations showed that Cr-Al alloy powder should be used and the optimum composition was 90~95wt% Cr and 5~10wt% Al. Simultaneous chromizing and aluminizing of a mild steel was achieved using 95Cr-5Al wt% alloy powders as a masteralloy, NH4Cl as an activator at $1273^{circ}$K under Ar atmosphere.

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