Phase equilibria of the La-Cu-Sn temary system at 473K

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• 作者：Yongzhong ZhanHaofeng XieJichao JiangYanfei XuYing WangYinghong Zhuang
• 会议时间：2008-11-01
• 关键词：金相图 ; X射线衍射 ; 三元体系 ; 相平衡
• 作者单位：Yongzhong Zhan(Key Laboratory of Nonferrous MetalMaterials and New Processing Technology,Guangxi University,Ministry of Education,Nanning,Guangxi 530004,PR China)Haofeng Xie,Jichao Jiang,Yanfei Xu,Ying Wang,Yinghong Zhuang(Key Laboratory of Nonferrous Metal Materials and New Processing Technology,Guangxi University,Ministry of Education,Nanning,Guangxi 530004,PR China)
• 母体文献：第十四届全国相图会议暨国际相图与材料设计研讨会论文集
• 会议名称：第十四届全国相图会议暨国际相图与材料设计研讨会
• 会议地点：长沙
• 主办单位：中国物理学会
• 语种：chi

摘要

The isothermal section of the La-Cu-Sn ternary system at 473K have been investigated by means of X-ray powder diffraction(XRD),optical microscopy(OM),scanning electron microscopy(SEM)and differential thermal analysis(DTA).It consists of 20 single-phase regions,43 two-phase regions and 24 three-phase regions.At 473 K,the existences of 11 binary compounds CuLa,Cu2La,Cu5La,Cu6La,Cu3Sn,Cu6Sn5,La5Sn3,La5Sn4,LaSh,La3Sn5,LaSh3 and 5 other ternary compounds CuLaSn,Cu2LaSn2,CuLa2Sn4,Cu5LaSn,Cu9LaSn4 have been confirmed.The maximum solid solubility of Cu in Cu2LaSh2 is about 7 at.% Cu.A new ternary compound with atomic ratio close to Cu/La/Sn=1:3:4 has been found.The crystal structure of CuLa3Slh was determined and refined by means of Rietveld’s method,resulting Orthorhombic,Pd5Pu3 type,space group Cmcm.