标题：Crystallization kinetics of an amorphous Zr-Cu-Ni alloy: calculation of the activation energy
作者：Wang, HR; Gao, YL; Ye, YF; Min, GH; Chen, Y; Teng, XY
作者机构：[Wang, HR; Gao, YL; Ye, YF; Min, GH; Chen, Y; Teng, XY]Shandong Univ, Key Lab Liquid Struct & Hered Mat, Minist Educ, Jinan 250061, Peoples 更多
通讯作者地址：[Wang, HR]Shandong Univ, Key Lab Liquid Struct & Hered Mat, Minist Educ, Jinan 250061, Peoples R China.
来源：JOURNAL OF ALLOYS AND COMPOUNDS
关键词：amorphous materials; transition metal compounds; rapid solidification;; kinetics; thermal analysis
摘要：The activation energies of amorphous Zr-Cu-Ni alloy under continuous heating conditions have been calculated using different methods based on differential scanning calorimetry (DSC) data. The activation energy for crystallization of amorphous Zr70Cu20Ni10 alloy are determined as 313, 411, 293, 253 and 286 kJ/mol by means of the Kissinger, Ozawa, Cheng, Gao and Wang and Matusita equations, respectively. However, under isothermal crystallization the average value of activation energy of amorphous Zr70Cu20Ni10 alloy is 355 kJ/mol. As for the amorphous Zr70Cu20Ni10 alloy, the Ozawa equation gives the largest value of activation energy and the Gao and Wang equation shows the smallest one. The difference in the activation energy for crystallization of an amorphous alloy may be attributed to the different approximations in these models. (C) 2002 Elsevier Science B.V. All rights reserved.