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宋敏,郑洲顺,谌东东,汤慧萍,王建忠.表面扩散机制下非等径金属粉末烧结过程的数值模拟研究[J].稀有金属材料与工程(英文),2017,46(10):2842~2846.[Song Min,Zheng Zhoushun,Chen Dongdong,Tang Huiping and Wang Jianzhong.The numerical simulation of non-equal sintering metal powders by surface diffusion[J].Rare Metal Materials and Engineering,2017,46(10):2842~2846.]
The numerical simulation of non-equal sintering metal powders by surface diffusion
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Received:June 28, 2016  Revised:January 08, 2017
DOI:
Key words: sintering  metal powers  surface diffusion  finite difference  radii ratio
Foundation item:国家自然科学基金项目(面上项目,重点项目,重大项目);国家重点基础研究发展计划(973计划);金属多孔材料国家重点实验室开 放基金项目;中南大学研究生创新项目
Author NameAffiliation
Song Min,Zheng Zhoushun,Chen Dongdong,Tang Huiping and Wang Jianzhong  
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Abstract:
      This paper focuses on the numerical simulation of non-equal sintering metal powers by surface diffusion. In order to simulate the sintering process of non-equal metal powders clearly, the surface diffusion model is modified by establishing more suitable initial boundary conditions. And this model is numerically solved by the finite difference method. The three-dimensional numerical simulations of two metal powers with radii ratios 1:1, 1:1.5, 1:2 are implemented by this model. Through comparison, the simulation results are consistent with the experimental ones. Finally, the effect of metal powders’ radii ratios on the growth rate of sintering neck is investigated, which implies that the sintering neck radius increases with the decreasing of radii ratios.
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