Mechanism of fast diffusion of substitutional solute atoms in FCC crystals

被引：0
|
作者：
陈宁
余宗森
机构：
[1] University of Science and Technology Beijing
[2] Beijing 100083
[3] Department of Physical Chemistry
[4] China
来源：
Chinese Science Bulletin | 1995年 / 11期
关键词：
diffusion; vacancy; solute atom; complex;
D O I：
暂无
中图分类号：
TG111 [金属物理学];
学科分类号：
0702 ; 070205 ;
摘要：
In the alloy systems of face-centred cube(FCC)structure,the diffusivites of some solute atomsare several orders of magnitude more than those of the matrix atoms,such as Au and Ag in Pb,S in Ni,as well as B in γ-Fe.Many people think that these solute atoms with anomalouslyfast diffusivities diffuse as interstitial atoms.So far this theory has been widely used.For ex-ample,the latest edition of Metal Reference Book says,about diffusion in metals,that somesolutes "may dissolve interstitially,at least in part,and diffuse by an interstitial-type process.
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页码：894 / 897
页数：4
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