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1、------------------------------------------------------------------------------------------------Co替代Ni对快淬Mg2Ni型合金结构及第21卷第1期Vol.21No.1中国有色金属学报2011年1月TheChineseJournalofNonferrousMetalsJan.2011文章编号：1004-0609(2011)01-0118-07电化学贮氢性能的影响张羊换1,2,马志鸿1,3,赵栋梁1,张胤2,郭世海1,王新林1(1.钢铁研究总院功能材料研
2、究所，北京100081;2.内蒙古科技大学材料与冶金学院，包头014010;3.包头稀土研究院科技处，包头014010)关键词：Mg2Ni型合金；快淬；Co替代Ni；电化学贮氢InfluencesofsubstitutingNiwithCoonstructureandelectrochemicalhydrogenstoragecharacteristicsofmeltspunMg2Ni-typealloysZHANGYang-huan1,2,MAZhi-hong1,3,ZHAODong-liang1，ZHANGYin2,GUOShi-hai1,WA
3、NGXin-lin1(1.DepartmentofFunctionalMaterialsResearch,CentralIronandSteelResearchInstitute,Beijing100081,China;2.SchoolofMaterialsandMetallurgy,InnerMongoliaUniversityof——————————————————————————————————————-----------------------------------------------------------------------
4、-------------------------ScienceandTechnology,Baotou014010,China;3.DepartmentofScienceandTechnology,BaotouResearchInstituteofRareEarths,Baotou014010,China)Abstract:InordertoimprovetheelectrochemicalhydrogenstoragecharacteristicsoftheMg2Ni-typealloy,Niinthealloywaspartiallysubs
5、titutedbyelementCo.TheMg2Ni-typeMg2Ni1?xCox(x=0,0.1,0.2,0.3,0.4)alloyswerepreparedbymelt-spinningtechnology.Thespunribbonswithacontinuouslength,athicknessofabout30μmandawidthofabout25mmwereobtained.ThemicrostructuresofthespunalloyribbonswereanalyzedbyXRD,SEMandHRTEM.Thethermal
6、stabilityoftheas-spunalloyswasinvestigatedbyDSC.Theelectrochemicalhydrogenstorageperformancesofthespunalloyribbonsweretestedbyanautomaticgalvanostaticsystem.TheinfluencesofsubstitutingNiwithCoonthestructureandelectrochemicalhydrogenstoragecharacteristicsofmeltspunMg2Ni-typeall
7、oywereinvestigated.Theresultsshowthatnoamorphousphaseisdetectedintheas-spunCo-freealloy,buttheas-spunalloyscontainingCodisplayanevidentpercentofamorphousphase,suggestingthatthesubstitutionofCoforNisignificantlyheightenstheglassformingabilityoftheMg2Ni-typealloy.Thesubstitution
8、ofCoforNicausesaslightincreaseinthethermalstabilityoftheas-sp
