Mössbauer study of surface crystallization in metallic glasses |
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| Authors: | Ajay Gupta S. Habibi S. Lal G. Principi |
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| Affiliation: | (1) Department of Physics, Devi Ahilya University, 452001 Indore, India;(2) Sezione Materiali, Dipartimento di Ingegneria Meccanica, Via Marzolo 9, 35131 Padova, Italy |
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| Abstract: | Mössbauer spectroscopy has been used to study the kinetics of surface crystallization in amorphous Fe40Ni40B20. The activation energy for the surface crystallization is found to be about 230 kJ/mol, which is much lower than that for the bulk crystallization. Change in the surface composition due to aging can be a possible cause of this reduced surface stability. |
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