以磁场辅助烧结法(MASS)制备的La0.67 Mg0.33Ni3合金为对象,采用XRD、SEM及定容法研究了合金的相结构、微观形貌、活化能力及吸放氢动力学性能.结果显示,MASS制备的合金主相为PuNi3型结构的(La,Mg) Ni3.合金颗粒表面粗糙,呈现多孔结构.1T磁场下合成的合金经过3个循环就可完全活化,最大吸氢量达到1.47％(质量分数).动力学测试表明,该合金在室温、1MPa氢气下50s内吸氢达到饱和；在333K、0.001 MPa氢气下400s内可完成放氢,具有最佳的动力学性能,但合金可逆放氢量较低.
参考文献
| [1] | 张绪玉,罗永春,王大辉,闫汝煦,章应,康龙.La0.67Mg0.33Ni3.0-xAlx（x=0～0.3）贮氢合金的相结构及电化学性能的研究[J].功能材料,2005(07):1034-1037,1040. |
| [2] | 张羊换,董小平,郭世海,王国清,任江远,王新林.La-Mg-Ni基（PuNi3型）贮氢合金的微观结构与电化学性能[J].功能材料,2005(04):532-535. |
| [3] | Kadir K;Sakai T;Uehara I .Synthesis and structure determination of a new series of hydrogen storage alloys;RMg2Ni9(R=La,Ce,Pr,Nd,Sm and Gd) built from MgNi2 Laves-type layers alternating with AB5 layers[J].Journal of Alloys and Compounds,1997,257(1-2):115-121. |
| [4] | B. Liao;Y. Q. Lei;G. L. Lu .The electrochemical properties of La_xMg_(3-x)Ni_9 (x= 1.0-2.0) hydrogen storage alloys[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2003(0):746-749. |
| [5] | J.Chen;H.T.Takeshita .Hydriding properties of LaNi_3 and CaNi_3 and their substitutes with PuNi_3-type structure[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2000(1/2):304-313. |
| [6] | 廖彬,雷永泉,吕光烈,陈立新,葛红卫,潘洪革.La-Mg-Ni系AB3型贮氢电极合金的相结构与电化学性能[J].金属学报,2005(01):41-48. |
| [7] | 刘 静;李 谦;周国治.磁场辅助烧结法制备La0.67Mg0.33Ni3储氢合金[J].稀有金属材料与工程 |
| [8] | SI Tingzhi,ZHANG Qing'an,LIU Ning.Phase structure and electrochemical properties of laser sintered La2MgNi9 hydrogen storage electrode alloys[J].稀土学报（英文版）,2008(04):598-603. |
| [9] | Tang Renheng,Lu Qiyun,Xiao Fangming,Peng Neng,Wang Ying.Study on Nanocrystalline Rare Earth Mg-Based System Hydrogen Storage Alloys with AB3-Type[J].稀土学报（英文版）,2006(z2):343-346. |
| [10] | WU Feng,ZHANG Min-yu,MU Dao-bin.Effect of B and Fe substitution on structure of AB3-type Co-free hydrogen storage alloy[J].中国有色金属学报（英文版）,2010(10):1885-1891. |
| [11] | 刘 静 .磁场辅助合成镁基储氢合金及其吸放氢动力学机理[D].上海:上海大学,2009. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%