Nonconstant tip velocity in microgravity dendritic growth

被引:25
|
作者
LaCombe, JC [1 ]
Koss, MB [1 ]
Glicksman, ME [1 ]
机构
[1] Rensselaer Polytech Inst, Dept Mat Sci & Engn, Troy, NY 12180 USA
关键词
D O I
10.1103/PhysRevLett.83.2997
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Pivalic acid dendrites grown and observed as part of the USMP-4 isothermal dendritic growth experiment aboard the space shuttle Columbia show an initial transient followed by an accelerating tip growth that may approach a constant growth rate. The mechanism responsible for this behavior is not as yet clear and may be due to experimental factors such as the long-range thermal interactions between the dendrite and its neighbors or container, or it may arise from a fundamental characteristic of isothermal, diffusion-limited, dendritic growth.
引用
收藏
页码:2997 / 3000
页数:4
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