| Kinetic study on the non-isothermal crystallization of Gd53Al24Co20Zr3 bulk metallic glass | |
| Alternative Title | Kinetic study on the non-isothermal crystallization of Gd 53Al 24Co 20Zr 3 bulk metallic glass |
| Zhuang Yanxin1; Xing Pengfei2; Duan Tongfei1; Shi Hongyu1; He Jicheng1 | |
| 2011 | |
| Source Publication | JOURNAL OF RARE EARTHS
 |
| ISSN | 1002-0721 |
| Volume | 29Issue:8Pages:793-797 |
| Abstract | 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. |
| Other Abstract | 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. |
| Keyword | Gd-based metallic glass crystallization non-isothermal activation energy mechanism rare earths |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [Fundamental Research Funds for the Central University] |
| CSCD ID | CSCD:4331022 |
| Citation statistics |
Cited Times:2[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/157885 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.上海市地震局 2.中国科学院金属研究所 |
| Recommended Citation 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. |
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