Simulation of interdiffusion and voids growth based on cellular automata

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• 作者：Fan Zhang^a ; Boyan Zhang^b ; Nan Zhang^c ; ^{zhangnan@ccmu.edu.cn} ; Haishun Du^a ; Xinhong Zhang^a
• 关键词：Kirkendall effect ; Kirkendall voids ; Interdiffusion ; Cellular automata
• 刊名：Physica A: Statistical Mechanics and its Applications
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：468
• 期：Complete
• 页码：832-838
• 全文大小：881 K
• 卷排序：468

文摘

In the interdiffusion of two solid-state materials, if the diffusion coefficients of the two materials are not the same, the interface of the two materials will shift to the material with the lower diffusion coefficient. This effect is known as the Kirkendall effect. The Kirkendall effect leads to Kirkendall porosity. The pores act as sinks for vacancies and become voids. In this paper, the movement of the Kirkendall plane at interdiffusion is simulated based on cellular automata. The number of vacancies, the critical radius of voids nucleation and the nucleation rate are analysed. The vacancies diffusion, vacancies aggregation and voids growth are also simulated based on cellular automata.