%0 Journal Article
%T THE QUASI-CHEMICAL MODEL OF SELF-DIFFUSION IN HOMOGENEOUS ALLOYS<br>均匀合金自扩散的准化学模型
%A KAO SHU-JUN
%A TSIEN CHIH-TSIANG
%A <br>高树濬
%A 钱知强
%J 物理学报
%D 1965
%I 
%X Relationships between the activation energies (QA and QB) of self-diffusion of each component and the concentration CB of a completely disordered binary solid solution are derived on the basis of a quasi-chemical model. These theoretical results are compared with experimental data.When the atomic size of the two components is approximately the same, a linear relationship is obtained between(QB - QA) and CB for both f.c.c. and b.c.c. structure. This is in good agreement with the experimental results of Ag-Au system.In the low concentration range, the relationship between the activation energy QA of self-diffusion of the solvent and the concentration CB is also a straight line. The sign of the slope can be predicted from the relative magnitude of activation energy of self-diffusion of the solvent and that of impurity diffusion in the same solvent. This prediction is in good agreement with the known experimental data of self-diffusion of silver in nine different silver alloys of low alloy concentration.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=C19F14F1E30DE1EA&yid=DCB97F70EF167067&vid=659D3B06EBF534A7&iid=38B194292C032A66&sid=6837BC93241057EF&eid=E4EC39E73004B593&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0