通过感应熔炼方法制备了La(Al1-xMgx)2合金,并对其进行了退火处理.结果表明,当x≤0.4时,Mg部分替代Al没有改变合金的晶体结构,仍然是由单相La(Al,Mg)2构成;当x≥0.6时,合金是由La(Al,Mg)2,LaMg3和LaMg相构成.呈C15型的Laves相La(Al,Mg)2的点阵参数随着Mg替代量x的增加而增加.Mg部分替代Al的La(Al0.6Mg0.4)2合金在473 K和5 MPa氢压下反应5 d以后,可以分解成LaH3,MgH2和La3Al11.
参考文献
| [1] | 陈长聘,耿伟贤,陈昀,王启东.Ti-Zr-Mn-M（M=Cr,V或Cr与V）合金的储氢性能和晶体结构[J].稀有金属材料与工程,2001(01):31-34. |
| [2] | Zhang Q A;Lei Y Q .Multi-component TiNi-based hydrogen storage alloys with the secondary Laves phase[J].Journal of Alloys and Compounds,2004,368:362. |
| [3] | 张文魁,马淳安,黄辉,杨晓光,涂江平,雷永泉.Zr-Mn-V-Ni储氢电极合金中的Zr-Ni相形成及其晶体结构研究[J].稀有金属材料与工程,2001(03):194-197. |
| [4] | 陈立新,刘剑,肖游,代发帮,陈长聘.TiV1.35Cr1.35-xMnx（x=0～0.45）合金的相结构及储氢特性[J].稀有金属材料与工程,2005(05):705-708. |
| [5] | 黄太仲,吴铸,余学斌,陈金舟,夏保佳,徐乃欣.合金化对Ti-Cr基储氢合金性能的影响[J].稀有金属,2004(04):744-749. |
| [6] | Chai Zhigang;Wu Yaoming;Sun Changying.Electrochemical properties of LaAl2 Laves phase alloy[M].北京,2000:1103. |
| [7] | Gingl F;Yvon K;Vogt T et al.Synthesis and crystal structure of tetragonal LnMg2H7(Ln = La,Ce),two Laves phase hydride derivatives having ordered hydrogen distribution[J].Journal of Alloys and Compounds,1997,253-254:313. |
| [8] | Li X G;Chiba A;Aoki K et al.Hydrogen-induced amorphiztion in Ce-Al alloys[J].Scripta Materialia,1996,35:817. |
| [9] | Borzone Gabriella;Cardinale Anna Maria;Parodi Nadia et al.Aluminium compounds of the rare earths Enthalpies of formation of Yb-Al and La-Al alloys[J].Journal of Alloys and Compounds,1997,247:141. |
| [10] | Leineweber A.;Jacobs H. .Preparation of single crystals of LaAl and X-ray structure determination[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):L10-L12. |
| [11] | Belyavina N M;Markiv V Y;Zavodyanny V V .Crystal structure of the "La5Al4" compound[J].Journal of Alloys and Compounds,2004,367:132. |
| [12] | Niewa R;Kirchner M;Zhang H;Schnelle W;Grin Y .Metallic barrelane: crystal structure, physical properties and bonding analysis of La16Al13[J].Zeitschrift fur Kristallographie: International Journal for Structural, Physical, and Chemical Aspects of Crystalline Materials,2005(2/3):115-121. |
| [13] | Orimo S;Fujii H .Materials science of Mg-Ni-based new hydrides[J].Applied Physics A:Materials Science and Processing,2001,72:167. |
| [14] | Zhang Q A;Akiba E .Phase relations and hydrogenation behavior of Sr (Al1-x Mgx)2[J].Journal of Alloys and Compounds,2003,360:143. |
| [15] | Izumi F;Ikeda T A .Rietveld-analysis program RIETAN-98 and its applications to zeolites[J].Materials Science Forum,2000,321-324:198. |
| [16] | Grobner J;Kevorkov D;Schmid-Fetzer R .Thermodynamic modeling of Al-Ce-Mg phase equilibria coupled with key experiments[J].Intermetallics,2002,10:415. |
| [17] | Guo Cuiping;Du Zhenmin .Thermodynamic assessment of the La-Mg system[J].Journal of Alloys and Compounds,2004,385:109. |
| [18] | Orgaz Emilio .The electronic structure of the Laves phase intermetallics LnM2(Ln = Y,La-Lu,M = Mg,Al) and the LaMg2H7and CeMg2H7 hydrides[J].Journal of Alloys and Compounds,2001,322:45. |
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