EFFECT OF ALLOY GRAIN SIZE AND ITS GROWTH ON THE OXIDATION BEHAVIOUR OF Fe-18Cr-0. 6Si ALLOY.

被引：0

作者：

Sasa, Kazuji

Nakayama, Tadayuki

机构：

来源：

Boshoku Gijutsu/Corrosion Engineering | 1976年 / 25卷 / 12期

关键词：

METALLOGRAPHY - Grain Growth;

D O I：

10.3323/jcorr1974.25.12_719

中图分类号：

学科分类号：

摘要：

Influence of alloy grain growth during oxidation on the scaling behavior of Fe-18Cr and Fe-18Cr-0. 6Si was investigated by weight gain vs time measurements in 760 Torr oxygen at 1000 degree and 1100 degree C, and by subsequent examination of the scales. In the case of Fe-18Cr, oxidation rate increased rapidly, as the alloy grain began to grow, and nodular oxides containing alpha -Fe//2O//3 and Fe, Cr spinel type oxide could be found immediately after the breakaway. When an Fe-18Cr-0. 6Si alloy was oxidized, abnormal oxidation was not observed and its surface was covered with a protective Cr//2O//3 rich oxide layer. The restraint upon the breakaway associated with the grain growth may be attributed to the effect of Si incorporated into the initial oxide scale.

引用

页码：719 / 724