KINETICS OF SURFACE CRYSTALLIZATION IN THE METALLIC-GLASS FE78SI9B13

被引:17
作者
GUPTA, A
HABIBI, S
机构
[1] Department of Physics, Devi Ahilya University, Indore
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1991年 / 133卷
关键词
D O I
10.1016/0921-5093(91)90091-Z
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The kinetics of surface crystallization in amorphous Fe78Si9B13 ribbons have been studied using Mossbauer spectroscopy. The activation energy for surface crystallization is found to be 335 kJ mol-1, which is much less than that for the bulk crystallization. Conversion electron Mossbauer spectroscopy reveals that a higher topological disorder and a local change in the composition at the surface are the possible causes of reduced surface stability.
引用
收藏
页码:375 / 378
页数:4
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