ABSTRACT In this communication, we report theoretical analysis of the contribution of surface energy to the energy dissipation during the growth of a tin whisker in a tin film. The mass transport of tin for the growth of the tin whisker is grain-boundary diffusion. The surface energy hinders the growth of the tin whisker. There is a threshold of the strain energy stored in the tin film, below which no whiskers of corresponding radius can grow. The strain energy stored in a tin film prior to the formation of a whisker determines the growth time of the whisker if there are no other mechanisms for the dissipation and generation of strain energy.

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关于表面能对锡须生长影响的说明

摘要 在这篇通讯中，我们报告了表面能对锡膜中锡晶须生长过程中能量耗散的贡献的理论分析。用于锡晶须生长的锡的质量传输是晶界扩散。表面能阻碍了锡须的生长。锡膜中储存的应变能有一个阈值，低于该阈值，相应半径的晶须不能生长。如果没有其他耗散和产生应变能的机制，则在晶须形成之前储存在锡膜中的应变能决定了晶须的生长时间。