Growth Kinetics of Plate‐Like Precipitates
Growth Kinetics of Plate‐Like Precipitates
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DOI：
10.1063/1.1657190
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发表时间：
1969-10
影响因子：
3.2
通讯作者：
R. Trivedi;G. M. Pound
中科院分区：
文献类型：
--
作者：
R. Trivedi;G. M. Pound
不同模型的生长动力学的板状沉淀已严格审查。结果表明，Zener - Hillert方程没有很好地考虑进相边界处的毛细效应。本文提出了一种扩散控制的板状析出物稳态生长的数学处理方法，在这种情况下，沿界面的浓度变化是由毛细理论确定的。假定这种变化很小，因此稳态形状不会明显偏离抛物线。然后讨论了本处理对一组板的生长的适用性。
Different models for the growth kinetics of plate‐like precipitates have been critically reviewed. It is shown that the Zener‐Hillert equation does not properly take into consideration the capillarity effect at the advancing interphase boundary. A mathematical treatment of the diffusion controlled steady‐state growth of plate‐like precipitate is presented for the case in which the variation of concentration along the interface is determined from the theory of capillarity. This variation is assumed to be small so that the steady‐state shape does not deviate appreciably from a parabola. Applicability of the present treatment to the growth of a group of plates is then discussed.