Solute segregation at ordered grain boundaries

被引：19

作者：

Lejcek, P

Schneeweiss, O

机构：

[1] Acad Sci Czech Republ, Inst Phys, CZ-18221 Prague 8, Czech Republic

[2] Acad Sci Czech Republ, Inst Phys Mat, CZ-61662 Brno, Czech Republic

来源：

SURFACE SCIENCE | 2001年 / 487卷 / 1-3期

关键词：

alloys; grain boundaries; semi-empirical models and model calculations; surface segregation;

D O I：

10.1016/S0039-6028(01)01100-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A simple phenomenological model of solute segregation at partially ordered grain boundaries is proposed. It is consistent with present understanding of equilibrium segregation phenomena. The model is used to correlate complex concentration and temperature dependences of silicon segregation in ordered Fe-Si alloys. It also offers a new interpretation of boron segregation in FeAl base intermetallics as well as interesting consequences of nickel segregation in ordered NiAl solid solutions. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：210 / 222

页数：13

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