کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7901538 | 1510438 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Crystallization kinetics of Cu38Zr46Ag8Al8 bulk metallic glass in different heating conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Crystallization kinetics of Cu38Zr46Ag8Al8 bulk metallic glass in different heating conditions Crystallization kinetics of Cu38Zr46Ag8Al8 bulk metallic glass in different heating conditions](/preview/png/7901538.png)
چکیده انگلیسی
The crystallization kinetics of Cu38Zr46Ag8Al8 bulk metallic glass in non-isothermal mode and isothermal mode are investigated by differential scanning calorimetry. In non-isothermal conditions, the average value of activation energy is determined by Kissinger equation, and the value is around 310Â kJ/mol. The crystallization enthalpy is about 28.69Â J/g. In addition, the local Avrami exponent is adopted to describe the crystallization process. In isothermal route, the average value of activation energy for crystallization is calculated by the Arrhenius equation, and the value is about 451Â kJ/mol. The crystallization enthalpy is about 1.63Â J/g. And the Avrami exponent n ranges from 4.10 to 4.74, which indicates that the crystallization mechanism is mainly governed by constant nucleation rate. The created phases in the two conditions are different which can be confirmed by the X-ray diffraction test, this result is in accordance with the different crystallization enthalpies, but it's different with other investigations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 404, 15 November 2014, Pages 7-12
Journal: Journal of Non-Crystalline Solids - Volume 404, 15 November 2014, Pages 7-12
نویسندگان
J. Cui, J.S. Li, J. Wang, H.C. Kou, J.C. Qiao, S. Gravier, J.J. Blandin,