THE OXIDATION BEHAVIOR OF NIAL .1. PHASE-TRANSFORMATIONS IN THE ALUMINA SCALE DURING OXIDATION OF NIAL AND NIAL-CR ALLOYS

被引：595

作者：

BRUMM, MW

GRABKE, HJ

机构：

[1] Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf

来源：

CORROSION SCIENCE | 1992年 / 33卷 / 11期

关键词：

D O I：

10.1016/0010-938X(92)90002-K

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The oxide phases formed on NiAl and NiAl-Cr and their oxidation kinetics have been studied in the temperature range 973-1673 K using TGA, XRD, SEM and TEM. The oxidation rate depends on the oxide phase formed on the alloy. Gamma-Al2O3, theta-Al2O3, and alpha-Al2O3 have been observed and different k(p) values were correlated to their growth. Cr in NiAl accelerates the theta-alpha transformation and leads to a higher k(p) value. Cr2O3 formed in the initial stage of oxidation acts as nuclei for the formation of alpha-Al2O3.

引用

页码：1677 / &

共 17 条

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