Structure and Hydrogen Absorption Property of Mg_2Ni-Ti Alloy Powders Prepared by Mechanical Alloying

机译：机械合金化制备的Mg_2Ni-Ti合金粉末的结构和吸氢性能

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In the present study, pure Mg, Ni, and Ti powder mixtures were mechanically alloyed as compositions of (Mg_2Ni)_(100-x)Ti_x (x=0, 2.5, 5, 7.5 or 10 respectively). The structure evolution of as-milled powders were examined by X-ray diffraction and synchrotron X-ray absorption spectroscopy. For all compositions investigated, nanocrystalline (Mg_2Ni)_(100-x)Ti_x alloy powders were synthesized at the end of milling. The hydrogen absorption properties of the 15h as-milled powders were evaluated by a Sieverts type apparatus at a temperature of 300, 325 and 350℃ respectively. Improvement of the hydrogen absorption properties was observed with the titanium additions. At a temperature of 350℃ and a H_2 pressure of 50 atm, the (Mg_2Ni)_(95)Ti_5 as-milled powders exhibited a maximum hydrogen absorption value and reversible content of 3.88 and 3.01 wt.% respectively.

机译：在本研究中，将纯Mg，Ni和Ti粉末混合物机械合金化为（Mg_2Ni）_（100-x）Ti_x的成分（分别为x = 0、2.5、5、7.5或10）。通过X射线衍射和同步辐射X射线吸收光谱法检查研磨后粉末的结构演变。对于所研究的所有成分，在研磨结束时合成了纳米晶体（Mg_2Ni）_（100-x）Ti_x合金粉末。用Sieverts型设备分别在300、325和350℃的温度下评价15h研磨粉的氢吸收性能。钛的添加观察到氢吸收性能的改善。（Mg_2Ni）_（95）Ti_5初磨粉在350℃，H_2压力为50atm时，最大吸氢值和可逆含量分别为3.88和3.01 wt。％。

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《International Symposium on Metastable, Mechanically Alloyed and Nanocrystalline Materials(ISMANAM 2004); 20040822-26; Sendai(JP)》|2004年|P.419-422|共4页
会议地点 Sendai(JP)
作者
C.K. Lin; C.K. Wang; H.C. Lin; P.Y. Lee;
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作者单位

Department of Materials Science and Engineering, Feng-Chia University, Taichung 407, Taiwan;

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会议组织
原文格式 PDF
正文语种 eng
中图分类工程材料一般性问题;
关键词
mechanical alloying; hydrogen absorption; EXAFS;

机译：机械合金化；吸氢； EXAFS;

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Structure and Hydrogen Absorption Property of Mg_2Ni-Ti Alloy Powders Prepared by Mechanical Alloying

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