Solidification of Undercooled Ge_(73.7)Ni_(26.3) Alloy Subjected to Sputtering-Deposition of Ni Clusters  

作　　者：LIU Ri-ping JING Qin CAO Li-min ZHANG Ming ZHANG Fu-xiang ZHANG Xiang-yi ZHAO Jian-hua HE Duan-wei XU Ying-fan WANG Wen-kui 刘日平;景勤;曹立民;张明;张富祥;张湘义;赵建华;贺端威;许应凡;王文魁(Institute of Physics,Chinese Academy of Sciences,Beijing 100080;Institute of Materials Engineering,Yanshan University,Qinhuangdao 066004)

机构地区：[1]Institute of Physics,Chinese Academy of Sciences,Beijing 100080 [2]Institute of Materials Engineering,Yanshan University,Qinhuangdao 066004

出　　处：《Chinese Physics Letters》1998年第2期149-151,共3页中国物理快报（英文版）

摘　　要：Undercooled melt of Ge_(73.7)Ni_(26.3) alloy sample floated on B_(2)O_(3 ) melt was subjected to sputtering-deposition of Ni clusters on cooling to induce solidification.The initial temperature of solidification was 975 K.Its undercoolingΔT was 134 K with respect to the melting temperature of the primary phase Ge.On the cooling curve existed dual recalescences representing the transformation of the primary phase(Ge)and the eutectics(Ge+GeNi)respectively.But for the sample unsputtered,only a single exothermic peak presented on the cooling curve with the initial solidification temperature of 904K and undercooling of 205K.Careful observation of the microstructure proved that the Ge phase primarily formed in the sputtering experiment was now formed together with the formation of the eutectics in the experiment without sputtering.

关 键 词：SOLIDIFICATION EUTECTIC microstructure 

分 类 号：TG1[金属学及工艺—金属学]