The morphology of thermally grown α-Al2O3 scales on Fe-Cr-Al alloys

被引：62

作者：

Tolpygo, VK ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

来源：

OXIDATION OF METALS | 1999年 / 51卷 / 5-6期

关键词：

alumina scale; morphology; adherence; growth kinetics;

D O I：

10.1023/A:1018839227090

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The morphology and growth kinetics of protective alpha-Al2O3 scales formed during high-temperature oxidation of the Fe-Cr-Al and Fe-Cr-Al-Y alloys were studied. Scanning electron microscopy observations were focused on the oxide-wrinkling phenomenon and formation of interfacial cavities in the course of oxidation of the yttrium-free alloy. In this paper, emphasis is also placed on the effects of surface preparation and yttrium additions on the scale and scale-alloy interface structures. Several features of alumina morphology, which have not received sufficient attention previously, are discussed in the context of existing models; some critical issues are outlined.

引用

页码：449 / 477

页数：29

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