SOLUTE ENHANCEMENT OF SILVER SELF-DIFFUSION IN SILVER-TIN ALLOYS AT LOW-TEMPERATURES

被引：4
|
作者：
HENTRICH, D
FAUPEL, F
HEHENKAMP, T
机构：
[1] Institut für Metallphysik, Universität Göttingen, Göttingen
来源：
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1992年 / 65卷 / 01期
关键词：
D O I：
10.1080/01418619208201489
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Measurements of the diffusion of Ag-110m in Ag-Sn alloys over the temperature range 618-654 K and 0 to 4.5 at.% Sn have been carried out by means of the ion-beam sputtering technique for serial sectioning. A strong non-linear enhancement of solvent diffusion upon alloying was observed. The Gibbs free energy (-g(b1)) of vacancy-impurity binding was calculated from the data. Comparison with earlier high-temperature measurements reveals that g(b1) decreases substantially with decreasing temperature. At 1000 K g(b1) = 0.20 eV is observed in good agreement with results from measurements of the absolute vacancy concentration.
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页码：207 / 214
页数：8
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