深过冷条件下Ni－Sn合金的伪共生区与形核特点  

PSEUDO-COUPLED ZONE AND NUCLEATION OF Ni-Sn ALLOY UNDER DEEP UNDERCOOLING

作　　者：李顺朴[1] 赵德乾[1] 陈熙琛[1] 

机构地区：[1]中国科学院物理研究所

出　　处：《金属学报》1995年第7期A304-A308,共5页Acta Metallurgica Sinica

摘　　要：本文采用无机盐溶剂中高温循环过热和真空下单辊快淬两种方法获得Ｎｉ－Ｓｎ合金的深过冷，从而测得了Ｎｉ－Ｓｎ合金的伪共生区，分析表明：深过冷条件下共晶两相的形核是彼此独立的异质形核；尽管Ｎｉ３Ｓｎ是易于形核的相，但合金中的固有杂质有利于Ｎｉ（α）相形核．The deep undercooling of the Ni-Sn alloy was achieved by means of the cyclic overheating to high temperature and rapid quenching in a mixed inorganic sail flux,so the pseudo-coupled zone of the alloy was obtained.Under deep undercooling,the nucleations of eutectic phases are both in dependent and heterogeneous.although the Ni3Sn phase is easy to grow nuclei.The inherent impurities in Ni-Sn alloy are favourable to nucleation of α-Ni phase.

关 键 词：深过冷 共晶合金 伪共生区 形核 镍锡合金 

分 类 号：TG146.15[一般工业技术—材料科学与工程]