Non-isothermal crystallization of As2Se3 glass |
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Authors: | A Giridhar Sudha Mahadevan A K Singh |
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Affiliation: | (1) Materials Science Division, National Aeronautical Laboratory, 560 017 Bangalore, India |
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Abstract: | The results of non-isothermal crystallization studies performed at different heating rates on batches of As2Se3 glasses prepared from melts at 400°C, 600°C and 800°C are reported. The peak temperature of crystallizationT
p, the enthalpy of crystallization ΔH
c and the activation energy for crystallizationE
c are independent of the melt temperature used in the preparation. Bulk nucleation with three-dimensional growth of crystals
is indicated for As2Se3. The values of ΔH
c andE
c are found to be respectively 23·3 ± 0·9 cal/g and 36·5 ± 0·9 kcal/mol for As2Se3. |
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Keywords: | As2Se3 glass non-isothermal crystallization activation energy for crystal growth |
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