研究了气氛压力、燃烧温度和保温时间对合成Mg2NiH4的影响,对产物进行了XRD和SEM分析,结果表明,在镁镍共晶温度附近,于氩气气氛中燃烧合成1h就能生成大量的Mg2Ni,保温2h,反应更为完全.随着氢压的增大,镁镍氢化物有明显的增加,在2.2MPa时,金属镍完全消失.随着合成温度的升高,镁镍氢化物有所增加,但温度太高,不利于Mg2NiH0.3进一步氢化形成Mg2NiH4.适当的保温时间可促进镁镍合成反应的进行.
参考文献
| [1] | HanJS;Lee J Y .AstudyofthehydridingkineticofMg2Ni[J].Journal of THE LESS-COMMON METALS,1987,131:109. |
| [2] | LiLiquan;Akiyama T;Yagi Jun-ichiro.ReactionmechanismofhydridingcombustionsynthesisofMg2NiH4[J].INTERMETALLICS,1999(07):671-674. |
| [3] | SaitaI;Li Liquan;Saito K.HydridingcombustionsynthesisofMg2NiH4[J].Journal of Alloys and Compounds,2003(356-357):190-193. |
| [4] | 裴新军,夏天东,刘天佐,陈学定.贮氢合金Mg2Ni的燃烧合成[J].有色金属(冶炼部分),2002(05):40-42. |
| [5] | 王权,吕会忠,季世军,孙俊才.Al,Mn对Mg2Ni型贮氢合金相形成及电化学性能的影响[J].金属功能材料,2003(03):13-16. |
| [6] | Ewa Roennebro;Dag Noreus .Surface sensitivity of Mg_2NiH_4 leading to a profound color change[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2004(1/4):115-119. |
| [7] | Liquan Li;Itoko Saita;Katsushi Saito .Effect of synthesis temperature on the purity of product in hydriding combustion synthesis of Mg_2NiH_4[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2002(1/2):189-195. |
| [8] | 陆佩文.无机材料科学研究基础[M].武汉:武汉工业大学出版社,1996:229-230. |
| [9] | 黄培云.粉末冶金原理[M].北京:冶金工业出版社,1982:264-265. |
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