Grain boundary character distribution in oxides formed on (100) and (111) nickel single crystals coated with ceria gel

被引：13

作者：

Czerwinski, F ^{[1
]}

Zhilyaev, A ^{[1
]}

Szpunar, JA ^{[1
]}

机构：

[1] McGill Univ, Dept Engn Met, Montreal, PQ H3A 2B2, Canada

来源：

CORROSION SCIENCE | 1999年 / 41卷 / 09期

基金：

加拿大自然科学与工程研究理事会;

关键词：

reactive element effect; texture; grain boundary; nickel oxide; ceria;

D O I：

10.1016/S0010-938X(99)00006-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A numerical analysis of texture data was conducted to assess the grain boundary character distribution in oxides formed at 1073 K on the (100) and (111) crystal faces of nickel coated with ceria gel. As input data were used the orientation distribution functions of oxide grains derived from three basic pole figures, measured by the X-ray technique. As an output of the calculations, the grain boundary misorientation functions and frequencies of coincidence site lattice boundaries were obtained. The results revealed that the substrate crystallographic orientation exerted an essential influence on oxide grain boundary structure. The presence of ceria introduced some changes; however, they are rather small and cannot explain the existing differences in oxide growth kinetics. An implication of this finding for the explanation of the 'reactive element effect' is discussed. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1703 / 1713

页数：11

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