Thermal Stability and Kinetics of Binary Cu<suB>65</suB>Hf<suB>35</suB> Bulk Metallic Glass

Chin. Phys. Lett.

2006, Vol. 23

Issue (11): 3097-3100 DOI:

Original Articles

Thermal Stability and Kinetics of Binary Cu₆₅Hf₃₅ 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

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SHAN Shao-Tai, XIA Lei, DING Ding et al 2006 Chin. Phys. Lett. 23 3097-3100

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Abstract We investigate the thermal stability and kinetics of Cu₆₅Hf₃₅ bulk metallic glass (BMG). Cu₆₅Hf₃₅ 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.

Keywords: 78.67.Hc 42.65.-k

Published: 01 November 2006

PACS:	78.67.Hc	(Quantum dots)
	42.65.-k	(Nonlinear optics)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2006/V23/I11/03097

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	SHAN Shao-Tai
	XIA Lei
	DING Ding
	DONG Yuan-Da

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