کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7719251 | 1497493 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on hydrogenation behaviors of a Mg-13Y alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Study on hydrogenation behaviors of a Mg-13Y alloy Study on hydrogenation behaviors of a Mg-13Y alloy](/preview/png/7719251.png)
چکیده انگلیسی
The Mg-13Y bulk alloy was prepared by conventional casting process and the Mg-13Y powder was processed by ball milling using the casting alloy under the protection of argon. The hydrogenation thermodynamics, hydrogenation process and phase transitions were carefully investigated in the Mg-13Y powder alloy. It is shown that the Mg-13Y casting alloy consists of Mg24Y5 phase and α-Mg containing yttrium which have different hydrogenation enthalpies, â195 kJ/mol H2 (by calculation) and â42 kJ/mol H2 (by Pressure-Composition-Temperature experiment), respectively. The structure evolution and phase transition in the Mg-13Y bulk alloy treated at 673 K and at 4 MPa for 40 h were observed by an optical microscopy (OM), a scanning electron microscopy (SEM), a transmission electron microscopy (TEM) and X-ray diffraction (XRD). The large Mg24Y5 phase in the bulk Mg-13Y alloy could be destroyed into fine cuboid-shaped YH2 phases during the hydrogenation process, which is probably responsible for the improvement of mechanical properties of Mg-13Y alloy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 16, 27 May 2014, Pages 8303-8310
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 16, 27 May 2014, Pages 8303-8310
نویسندگان
Xiaoying Shi, Jianxin Zou, Chuan Liu, Lifang Cheng, Dejiang Li, Xiaoqin Zeng, Wenjiang Ding,