La替代Mg对快淬Mg2Ni型贮氢合金结构及吸放氢动力学的影响

功能材料, 2010, 41(8): 1418-1426.

La替代Mg对快淬Mg2Ni型贮氢合金结构及吸放氢动力学的影响

高金良 ^1, , 马志鸿 ^2, , 赵栋梁 ^3, , 葛启录 ^4, , 王新林 ^5, , 张羊换 ^6,

1.钢铁研究总院,功能材料研究所,北京,100081;包头三德电池材料有限公司,内蒙古,包头,014060

2.钢铁研究总院,功能材料研究所,北京,100081;包头稀土研究院,内蒙古,包头,014010

3.钢铁研究总院,功能材料研究所,北京,100081

4.钢铁研究总院,功能材料研究所,北京,100081

5.钢铁研究总院,功能材料研究所,北京,100081

6.钢铁研究总院,功能材料研究所,北京,100081

基金项目: 国家自然科学基金(50871050;50961001) 内蒙古自然科学基金重点资助项目(200711020703) 内蒙古高等教育科学研究资助项目(NJzy08071)

关键词： Mg2Ni型合金 , 快淬 , La替代Mg , 吸放氢动力学

Effects of substituting Mg with La on structure and hydriding and dehydriding kinetics of melt spun Mg2Ni-type hydrogen storage alloy

为了改善Mg2Ni型贮氢合金的吸放氢动力学性能,用La部分替代合金中的Mg.用快淬工艺制备了Mg2Ni型Mg2-xLaxNi(x=0、0.2、0.4、0.6)贮氢合金, 获得长度连续,厚度约为30μm,宽度为25mm的薄带.用XRD、SEM、HRTEM分析了快淬态合金薄带的微观结构,用DSC研究了快淬薄带的热稳定性,应用Sieverts装置研究了快淬态合金的吸放氢动力学,探索了La替代Mg对快淬Mg2Ni型合金吸放氢动力学性能的影响.结果发现,在快淬无La合金中没有出现非晶相,但快淬含La合金显示了以非晶相为主的结构.表明La替代Mg显著提高Mg2Ni型合金的非晶形成能力.快淬合金的热稳定性随La含量的增加而上升.快淬态合金的吸氢量随La含量的增加而减小,但其放氢量在La含量x=0.2时有极大值,这主要归因于La替代Mg导致的结构变化.

参考文献

[1]	Ross DK .Hydrogen storage: The major technological barrier to the development. of hydrogen fuel cell cars[J].Vacuum: Technology Applications & Ion Physics: The International Journal & Abstracting Service for Vacuum Science & Technology,2006(10):1084-1089.
[2]	Ebrahimi-Purkani A;Kashani-Bozorg S F .[J].Journal of Alloys and Compounds,2008,456:211-215.
[3]	Kyoi D;Sakai T;Kitamura N et al.[J].Journal of Alloys and Compounds,2008,463:306-310.
[4]	Palade P;Sartori S;Maddalena A et al.[J].Journal of Alloys and Compounds,2006,415:170-176.
[5]	Song M Y;Yim C D;Bae J S et al.[J].Journal of Alloys and Compounds,2008,463:143-147.
[6]	Liu F J;Suda S .[J].Journal of Alloys and Compounds,1995,231:742-750.
[7]	Czujko T;Varin R A;Chiu C et al.[J].Journal of Alloys and Compounds,2006,414:240-247.
[8]	Liu YN.;Zhang XJ. .Effect of lanthanum additions on electrode properties of Mg2Ni[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(1/2):231-234.
[9]	Sakintuna B;Lamari-Darkrim F;Hirscher M .[J].International Journal of Hydrogen Energy,2007,32:1121-1240.
[10]	Song M Y;Kwon S N;Bae J S et al.[J].International Journal of Hydrogen Energy,2008,33:1711-1718.
[11]	Savyak M;Hirnyj S;Baure H D et al.[J].Journal of Alloys and Compounds,2004,364:229-237.
[12]	Spassov T.;Koster U. .Thermal stability and hydriding properties of nanocrystalline melt-spun Mg63Ni30Y7 alloy[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,1998(2):279-286.
[13]	Huang L J;Liang G Y;Sun Z B et al.[J].Journal of Power Sources,2006,160:684-687.
[14]	Zhang Y H;Zhao D L;Ren H P et al.[J].Journal of Rare Earths,2009,27(03):514-519.
[15]	Chen H S .[J].Acta Metallurgica,1974,22(12):1505-1511.
[16]	Spassov T;Solsona P;Suriňach S et al.[J].Journal of Alloys and Compounds,2003,349:242-254.
[17]	Orimo S;Fujii H .[J].Applied Physics A:Materials Science and Processing,2001,72:167-186.
[18]	Wu Y;Han W;Zhou S X et al.[J].Journal of Alloys and Compounds,2008,466:176-181.
[19]	Woo J H;Lee K S .[J].Journal of the Electrochemical Society,1999,146:819-823.
[20]	Takahashi Y;Yukawa H;Morinaga M .[J].Journal of Alloys and Compounds,1996,242:98-107.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网