Study on hydrogenation behaviors of a Mg-13Y alloy
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- 作者：Xiaoying Shi shixiaoying@sjtu.edu.cn" class="auth_mail ; Jianxin Zou zoujx@sjtu.edu.cn" class="auth_mail ; Chuan Liu chuanliu0627@163.com" class="auth_mail ; Lifang Cheng chenglifang@china.com.cn" class="auth_mail ; Dejiang Li lidejiang@sjtu.edu.cn" class="auth_mail ; Xiaoqin Zeng ; xqzeng@sjtu.edu.cn" class="auth_mail ; Wenjiang Ding wjding@sjtu.edu.cn" class="auth_mail
- 关键词：Hydrogenation behavior ; Mg-13Y bulk alloy ; Hydrogenation enthalpy ; YH2 cuboid phase
- 刊名：International Journal of Hydrogen Energy
- 出版年：27 May 2014
- 年：2014
- 卷：39
- 期：16
- 页码：8303-8310
- 全文大小：1459 K
文摘
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We examine the hydrogenation thermodynamics in the Mg-13Y powder alloy.
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We observe the microstructure evolution in the bulk alloy during hydrogenation.
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Hydrogenation enthalpy of 伪-Mg containing yttrium is −42 kJ/mol H2 by experiment.
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Enthalpy of the reaction (Mg24Y5 + 5H2 → 24 Mg + 5YH2) is −195 kJ/mol H2 by calculation.
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The large Mg24Y5 phases could be hydrogenated into fine cuboid YH2 phases.