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

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 15期

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

页码：2997 / 3000

页数：4

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