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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关于表面能对锡晶须生长的影响的说明

在此交流中，我们报告了在锡膜中锡晶须生长期间表面能对能量耗散的贡献的理论分析。用于锡晶须生长的锡的传质是晶界扩散。表面能阻碍锡晶须的生长。锡膜中存储有一个应变能阈值，在该阈值以下不能生长相应半径的晶须。如果没有其他机制来分散和产生应变能，则在晶须形成之前存储在锡膜中的应变能决定了晶须的生长时间。