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Crystal structures and hydrogenation behavior of (Ca_(0.9)Sr_(0.1))_8(Al_(1-x)Zn_x)_3 alloys

Crystal structures and hydrogenation behavior of (Ca_(0.9)Sr_(0.1))_8(Al_(1-x)Zn_x)_3 alloys
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摘要 The crystal structures and hydrogenation behavior of the （Ca0.9Sr0.1）8（Al1-xZnx）3 （x = 0, 0.1, 0.2, 0.3 and 0.4） alloys were investigated. The new phase （Ca,Sr）E（Al,Zn） was found whenx 〉 0.1. （Ca, Sr）E（Al,Zn） crystallizes in space group 14/mmm （A-139）. The lattice parameters were calculated to be a = b = 1.1616（2） nm, c = 1.6422（4） nm. Zn atoms occupy the 8h and 16n sites together with Al atoms. The （Ca0.9Sr0.1）8Al3 alloy only contains a single Ca8Al3 phase. The （Ca0.9Sr0.1）8（Al1-xZnx）3 alloys consist of Ca8Al3, CasZn3, Ca and （Ca,Sr）2（Al,Zn） phases when x is from 0.1 to 0.3. As x increasing to 0.4, the alloy consists of （Ca,Sr）E（Al,Zn）, Ca8Zn3 and Ca. The hydrogenated （Ca0.9Sr0.1）8Al3 and （Ca0.9Sr0.1）8（Al0.9Zn0.1）3 samples consist of CartE and Al. The （Ca0.9Sr0.1）8（Al1-xZnx）3 （x = 0.2, 0.3 and 0.4） samples can be hydrogenated into CaH2, Al and CaZnl3 under a hydrogen pressure of 5 MPa at 473 K. The crystal structures and hydrogenation behavior of the （Ca0.9Sr0.1）8（Al1-xZnx）3 （x = 0, 0.1, 0.2, 0.3 and 0.4） alloys were investigated. The new phase （Ca,Sr）E（Al,Zn） was found whenx 〉 0.1. （Ca, Sr）E（Al,Zn） crystallizes in space group 14/mmm （A-139）. The lattice parameters were calculated to be a = b = 1.1616（2） nm, c = 1.6422（4） nm. Zn atoms occupy the 8h and 16n sites together with Al atoms. The （Ca0.9Sr0.1）8Al3 alloy only contains a single Ca8Al3 phase. The （Ca0.9Sr0.1）8（Al1-xZnx）3 alloys consist of Ca8Al3, CasZn3, Ca and （Ca,Sr）2（Al,Zn） phases when x is from 0.1 to 0.3. As x increasing to 0.4, the alloy consists of （Ca,Sr）E（Al,Zn）, Ca8Zn3 and Ca. The hydrogenated （Ca0.9Sr0.1）8Al3 and （Ca0.9Sr0.1）8（Al0.9Zn0.1）3 samples consist of CartE and Al. The （Ca0.9Sr0.1）8（Al1-xZnx）3 （x = 0.2, 0.3 and 0.4） samples can be hydrogenated into CaH2, Al and CaZnl3 under a hydrogen pressure of 5 MPa at 473 K.
作者 SI Tingzhi YANG Weiming ZHANG Qing＇an
机构地区 School of Materials Science and Engineering
出处 《Rare Metals》 SCIE EI CAS CSCD 2008年第2期134-137,共4页 稀有金属（英文版）
基金 This study was financially supported by the National Natural Science Foundation of China (No.50371001) the Scientific Research Foundation for the Candidates of Academic Leaders,Education Department of Anhui Province of China (No.2005hbz08).
关键词 calcium-based alloys crystal structure X-ray diffraction hydrogenation behavior. calcium-based alloys crystal structure X-ray diffraction hydrogenation behavior.
分类号 TG13 [一般工业技术—材料科学与工程]
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参考文献12

  • 1Sandrock G.D., Murrary J.J., Post M.L., and Taylor J.B., Hydrides and deuterides of CaNi5, Mater. Res. Bull., 1982, 17: 887.
  • 2Liang G. and Schulz R., Phase structures and hydrogen storage properties of Ca-Mg-Ni alloys prepared by mechanical alloying, J. Alloys Compd., 2003, 356/357: 612.
  • 3Zhang Q.A., Zhao G.P., and Si T.Z., Phase relations and electrochemical properties of Ca1-xMgx(Ni0.9Al0.1)2 alloys, Int. J. Hydrogen Energy, 2006, 31: 1182.
  • 4Kadir K., Kudyama N., Sakai T., Uehara I., and Eriksson L., Structural investigation and hydrogen capacity of CaMg2Ni9: a new phase in the ABEC9 system isostructural with LaMg2Ni9, J. Alloys Compd., 1999, 284: 145.
  • 5Tanaka H., Miyamura H., Kuriyama N., Sakai T., and Uehara L, Hydriding behavior of pseudobinary CaAl2-xMx (M = B, Si, 0 ≤ x ≤ 1) alloys, J. Alloys Compd., 1995, 231: 675.
  • 6Zhang Q.A., Enoki H., and Akiba E., Phase relations and hydrogenation behavior of Sr1-xCaxAl2 (0≤ x ≤ 1), J. Alloys Compd., 2001, 322: 257.
  • 7Miller G.J. and Nesper R., Ca8-xLixAl3: defects and substitution in the Fe3Al structure type, J. Alloys Compd., 1992, 185: 221.
  • 8Huang B. and Corbett J.D., Two new binary calcium-aluminum compounds: Ca13Al14 with a novel two-dimensional aluminum network, and CaaAl3 an FeaAl-type analogue, Inorg. Chem., 1998, 37: 5827.
  • 9Zhang Q.A., Yang W.M., Enoki H., and Akiba E., Crystal structure of a new compound (Ca0.53Sr0.47)2Al, J. Alloys Compd., 2007, 441 (1-2): 115.
  • 10Vargas-Tah A.A., Garcia R.C., Archila L.F.P., Solis J.R., and Lopez A.J.G., A study on sulfur reduction in FCC gasoline using Zn-Mg-Al spinels, Catal. Today, 2005, 107: 713.
Rare Metals
2008年 第2期

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