| Effect of AI content on the phase structure and the hydrogenation characteristic of La（Mg1-xAlx） alloys |
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| 引用本文： | HOU Qingyu ZHANG Qing＇an.Effect of AI content on the phase structure and the hydrogenation characteristic of La（Mg1-xAlx） alloys[J].稀有金属(英文版),2006,25(6):654-658. |
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| 作者姓名： | HOU Qingyu ZHANG Qing＇an |
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| 作者单位： | School of Materials Science and Engineering, Anhui University of Technology, Ma＇anshan 243002, China |
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| 基金项目： | This work is financially supported by the Natural Science Foundation of Anhui Province, China （No. 050440602）; the Key Project of Chinese Ministry of Education （No. 205070）; and the Scientific Research Foundation for the Candidates of Academic Leaders, Education Department of Anhui Province, China （No. 2005hbz08）. |
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| 摘 要： | La（Mg1-xAlx） （x=0.2, 0.4, 0.6, 0.8） alloys have been prepared using induction melting followed by annealing. It is found that partial substitution of Mg by Al does not lead to a change in crystal structure, and the alloys have a single LaMg phase when x 〈 0.4. The lattice parameter of the LaMg phase decreases obviously after the partial substitution of Mg by Al. However, further substitution of Mg by Al leads to the coexistence of multiple phases when x ≥ 0.6. The alloys consist of the LaMg, LaAl, LaAl2, and La5Al4 phases. The LaMg phase decreases, whereas the La5Al4 phase increases with the increase in x. The Al-substituted La（Mgo.6Al0.4） alloy can be hydrogenated into the tetragonal LaH3, cubic LaH3, MgH2, and LaPd under 5 MPa at 473 K for 5 d.
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| 关 键 词： | 人工智能 相结构 氢化特性 La（Mg1-xAlx）合金 |
| 收稿时间： | 2005-09-16 |
Effect of Al content on the phase structure and the hydrogenation characteristic of La(Mg1-xAlx) alloys |
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| Qingyu HOU,Qing''an ZHANG,.Effect of Al content on the phase structure and the hydrogenation characteristic of La(Mg1-xAlx) alloys[J].Rare Metals,2006,25(6):654-658. |
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| Authors: | Qingyu HOU Qing'an ZHANG |
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| Affiliation: | aSchool of Materials Science and Engineering, Anhui University of Technology, Ma'anshan 243002, China |
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| Abstract: | La(Mg1-xAlx) (x = 0.2, 0.4, 0.6, 0.8) alloys have been prepared using induction melting followed by annealing. It is found that partial substitution of Mg by Al does not lead to a change in crystal structure, and the alloys have a single LaMg phase when x ≤ 0.4. The lattice parameter of the LaMg phase decreases obviously after the partial substitution of Mg by Al. However, further substitution of Mg by Al leads to the coexistence of multiple phases when x ≥ 0.6. The alloys consist of the LaMg, LaAl, LaAl2, and La5Al4 phases. The LaMg phase decreases, whereas the La5Al4 phase increases with the increase in x. The Al-substituted La(Mg0.6Al0.4) alloy can be hydrogenated into the tetragonal LaH3, cubic LaH3, MgH2, and LaAl under 5 MPa at 473 K for 5 d. |
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| Keywords: | intermetallic compound phase structure hydrogenation characteristic X-ray diffraction |
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