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1、Ti—Cr基合金的储氢性能及晶体结构第42卷2006年6月第6期641—646页金属学腹ACTAMETALLURGICASINICA,,01.42June2006NO.6PP.641-646Ti—Cr基合金的储氢性能及晶体结构汪洋(兰州交通大学光电技术与智能控制教育部重点实验室,兰州730070)(浙江理工大学理学院,杭州310018)张琰王新华陈长聘(浙江大学金属材料研究所,杭州310027)摘要研究了Til+Cr1.2Mn0.s(x=0.0,0.1,0.2,0.3)系和Til+Cr1.2Mn0.S—(M=Fe,Ni,Cu,V,VFe;x----0.0
2、,0.1;y----0.1,0.3)系AB2型合金的储氢性能和晶体结构.xRD结果表明,合金主相为C14(MgZn2)型Laves相,可以保证较高的吸,放氢量.通过A侧过化学计量以及B侧用Fle,Ni,Cu,V,VFe分别替代部分Mn,增加了点阵常数和晶胞体积,降低了P—C—T曲线的滞后.由相应数据寻找出适合于金属氢化物氢压缩机的高压端储氢合金.结果表明,合金TiCr1.2MD.0.5Feo.3与Til.1Cr1.2M110.sCUO.3具有良好的储氢性能和压缩特性,可以作为性能优良的高压端储氢合金.关键词Ti—Cr基合金,储氢性能,晶体结构,压缩特性中
3、图法分类号TG139.7文献标识码A文章编号0412-1961(2006)06—0641—06HYDRoGENSToRAGEPRoPERTIESANDCRYSTALSTRUCTUREoFTi—CrBASEDALLoYSWANGYanqKeyLaboratoryofPhotoelectricTechnologyandIntelligentControl,MinistryofEducation,LanzhouJiaotongUniversity,Lanzhou730070CollegeofSciences,ZhejiangScience-Technology
4、University,Hangzhou310018ZHANGYah,WANGXinhua,CHENChangpinInstituteofMetalMaterials,ZhejiangUniversity~Hangzhou310027Correspondent:WANGyn,professor,Tel:(o931)4958o35,E-mail:wwyy$ool@hotmail.comSupportedbyNationalMinistryofConstructionofChinaNo.05一K{一3)Manuscriptreceived2005-09--29
5、.inrevisedform2006—02—20ABSTRACTThehydrogenstoragepropertiesandcrystalstructuresofTil+xCr1.2Mno.s(=0.0,0.1,0.2,0.3)andTil+zCr1.2Mn0.8-y(M=Fe,Ni,Cu,V,VFe;x=0.0,0.1;y=0.1,0.3)havebeenstudiedsystematically.XRDpatternsprovedthatthetwoseriesofhydrogenstoragealloyshavethesamecrystalstr
6、ucture,C14(MgZn2)typedLavesphase,whichissuitableforhydrogenabsorptionanddesorptionwithgreatamount.Thelatticeparametera,candcellvolumeVincreasewithincreasingTicontentandsubstitutionofMnbyFe,Ni,Cu,VandVFe,whilethehysteresisfactorsofP—C—Tcurvesdecrease.Inordertodevelophydrogenstorag
7、ealloysforthemetalhydridehydrogencompressor(MHHc),theeffectofthesubstitutionelementshavebeeninvestigated,andtheresultsshowthatbothalloys,TiCr1.2Mn0.5Fe0.3andTil.1Cr1.2Mno.5Cu0.3,havehighhydrogenstoragecapacitiesandhighcompressionratios.KEYWoRDSTi_Crbasehydrogenstoragealloy,hydrog
8、enstorageproperty,crystalstructure,compr
