Thermal Stability and Kinetics of Binary Cu65 Hf35 Bulk Metallic Glass
SHAN Shao-Tai, XIA Lei, DING Ding, DONG Yuan-Da
Center for Advanced Microanalysis, Shanghai University, Shanghai 200444
Institute of Materials, Shanghai University, Shanghai 200072
Thermal Stability and Kinetics of Binary Cu65 Hf35 Bulk Metallic Glass
SHAN Shao-Tai;XIA Lei;DING Ding;DONG Yuan-Da
Center for Advanced Microanalysis, Shanghai University, Shanghai 200444
Institute of Materials, Shanghai University, Shanghai 200072
关键词 ：
78.67.Hc ,
42.65.-k
Abstract ： We investigate the thermal stability and kinetics of Cu65 Hf35 bulk metallic glass (BMG). Cu65 Hf35 glassy rods in diameter up to 2mm are prepared by a conventional copper mould suction casting. Kinetics of glass transition and crystallizations are investigated and the ideal glass transition temperature of the alloy is obtained. It is found that the dependence of crystallization temperature of the BMG on the heating rates follows the Vogel--Fulcher--Tammann (VFT) non-linear relationship rather than the Kissinger and Lasocka linear fittings. The long-term thermal stability of the BMG is investigated by means of continuous crystallization diagrams obtained from the extension of VFT analysis. It is suggested that ideal glass transition and crystallization temperatures can also be regarded as the long-term stability criteria of the BMG.
Key words ：
78.67.Hc
42.65.-k
出版日期: 2006-11-01
引用本文:
SHAN Shao-Tai;XIA Lei;DING Ding;DONG Yuan-Da. Thermal Stability and Kinetics of Binary Cu65 Hf35 Bulk Metallic Glass[J]. 中国物理快报, 2006, 23(11): 3097-3100.
65 Hf35 Bulk Metallic Glass. Chin. Phys. Lett., 2006, 23(11): 3097-3100.
链接本文:
https://cpl.iphy.ac.cn/CN/
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https://cpl.iphy.ac.cn/CN/Y2006/V23/I11/3097
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2006, Vol. 23 
