2D Phase field modeling of sintering of silver nanoparticles

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• 作者：K. Chockalingam^a ; V.G. Kouznetsova^a ; ^{v.kouznetsova@tue.nl} ; O. van der Sluis^a ; ^b ; M.G.D. Geers^a
• 关键词：Sintering ; Cahn&ndash ; Hilliard ; Allen&ndash ; Cahn ; Phase field ; Silver particles ; Tensorial mobility
• 刊名：Computer Methods in Applied Mechanics and Engineering
• 出版年：2016
• 出版时间：1 December 2016
• 年：2016
• 卷：312
• 期：Complete
• 页码：492-508
• 全文大小：1961 K
• 卷排序：312

文摘

A phase field model for the sintering of silver nanoparticles is developed. A direction-dependent tensorial mobility formulation is adopted, capturing the fact that diffusion mainly occurs along the directions tangential to the surface of a particle. A finite element framework is applied to solve the governing phase field equations in a fully coupled implicit manner. The developed framework is demonstrated for particle sintering of equal and unequal sizes as well as at different temperatures. The obtained results are compared with experimental observations, whereby it is shown that the developed material model adequately describes the sintering mechanism of silver nanoparticles.