ON THE DENDRITES AND DENDRITIC TRANSITIONS IN UNDERCOOLED GERMANIUM

被引:44
作者
LAU, CF
KUI, HW
机构
[1] Department of Physics, The Chinese University of Hong Kong, Shatin
来源
ACTA METALLURGICA ET MATERIALIA | 1993年 / 41卷 / 07期
关键词
D O I
10.1016/0956-7151(93)90370-8
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Undercooled molten Ge was allowed to solidify at initial bulk undercoolings, DELTAT, from 10 to 200-degrees-C under dehydrated boron oxide flux. It turned out that in addition to the [211] twin dendrite found by Billig and the [100] twin-free dendrite discovered by Devaud and Turnbull, there is a third novel twin dendrite, the [110] twin dendrite. The twin planes in a [110] dendrite always appear in multiple numbers and the orientation is {111}. These different kinds of dendrites exist at different initial interfacial under coolings and the transition temperatures for [110] to [211], [211] to [100] are DELTAT = 61 and 93-degrees-C, respectively.
引用
收藏
页码:1999 / 2005
页数:7
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