Kinetic study on the non-isothermal crystallization of Gd53Al24Co20Zr3 bulk metallic glass

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	Kinetic study on the non-isothermal crystallization of Gd53Al24Co20Zr3 bulk metallic glass
其他题名	Kinetic study on the non-isothermal crystallization of Gd 53Al 24Co 20Zr 3 bulk metallic glass
	Zhuang Yanxin 1; Xing Pengfei 2; Duan Tongfei 1; Shi Hongyu 1; He Jicheng 1
	2011
发表期刊	JOURNAL OF RARE EARTHS
ISSN	1002-0721
卷号	29 期号:8 页码:793-797
摘要	Gd-based bulk metallic glass has drawn strong attention because of its large magnetic entropy changes. Thermal stability of metallic glass is a very important issue for its application. In the paper, crystallization behavior of Gd53Al24Co20Zr3 bulk metallic glass was investigated using non-isothermal differential scanning calorimetric (DSC) technique. Attention was given to the analytic details. The crystallized volume fractions as a function of temperature were derived from the DSC signals, where heat capacity change between amorphous phase and crystalline phase was considered. The local activation energies at different crystallized volume fraction were estimated using Doyle-Ozawa and Agrawal methods. The results suggested that the Doyle-Ozawa equation was appropriate to get local activation energy due to its simplicity and accuracy. The local activation energy depended on the crystallized volume fraction. Function reflecting crystallization mechanism was also deduced. The crystallization mechanism of the Gd-based bulk metallic glass was discussed.
其他摘要	Gd-based bulk metallic glass has drawn strong attention because of its large magnetic entropy changes.Thermal stability of metallic glass is a very important issue for its application.In the paper,crystallization behavior of Gd53Al24Co20Zr3 bulk metallic glass was investigated using non-isothermal differential scanning calorimetric(DSC)technique.Attention was given to the analytic details.The crystallized volume fractions as a function of temperature were derived from the DSC signals,where heat capacity change between amorphous phase and crystalline phase was considered.The local activation energies at different crystallized volume fraction were estimated using Doyle-Ozawa and Agrawal methods.The results suggested that the Doyle-Ozawa equation was appropriate to get local activation energy due to its simplicity and accuracy.The local activation energy depended on the crystallized volume fraction.Function reflecting crystallization mechanism was also deduced.The crystallization mechanism of the Gd-based bulk metallic glass was discussed.
关键词	Gd-based metallic glass crystallization non-isothermal activation energy mechanism rare earths
收录类别	CSCD
语种	英语
资助项目	[Fundamental Research Funds for the Central University]
CSCD记录号	CSCD:4331022
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/157885
专题	中国科学院金属研究所
作者单位	1.上海市地震局 2.中国科学院金属研究所
推荐引用方式 GB/T 7714	Zhuang Yanxin,Xing Pengfei,Duan Tongfei,et al. Kinetic study on the non-isothermal crystallization of Gd53Al24Co20Zr3 bulk metallic glass[J]. JOURNAL OF RARE EARTHS,2011,29(8):793-797.
APA	Zhuang Yanxin,Xing Pengfei,Duan Tongfei,Shi Hongyu,&He Jicheng.(2011).Kinetic study on the non-isothermal crystallization of Gd53Al24Co20Zr3 bulk metallic glass.JOURNAL OF RARE EARTHS,29(8),793-797.
MLA	Zhuang Yanxin,et al."Kinetic study on the non-isothermal crystallization of Gd53Al24Co20Zr3 bulk metallic glass".JOURNAL OF RARE EARTHS 29.8(2011):793-797.