Sintering of two particles by surface and grain boundary diffusion – a three-dimensional model and a numerical study
Sintering of two particles by surface and grain boundary diffusion – a three-dimensional model and a numerical study
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DOI：
10.1016/s0927-0256(98)00035-4
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发表时间：
1998-09
影响因子：
3.3
通讯作者：
Wen Zhang;I. Gladwell
中科院分区：
文献类型：
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作者：
Wen Zhang;I. Gladwell
我们用一个简单的晶界扩散公式描述了两个颗粒通过表面和晶界扩散在三维中烧结的模型，显示了连接条件的影响。使用中心偏移，我们隐式地考虑了晶界迁移。我们证明了演化是否会达到平衡状态或准平衡状态，以及平衡的类型取决于连接条件。在计算中成功地采用了直线法，得到了较为真实的解。该模型和计算可用于模拟粒子簇的“拼接”烧结过程。
We outline a model for the sintering of two particles in 3D by surface and grain boundary diffusion, showing the effect of the joining conditions, using a simple formula for grain boundary diffusion. Using centerwise shifts, we implicitly take account of grain boundary migration. We show that whether an evolution will reach an equilibrium state or a quasi-equilibrium state and the kind of equilibrium depends on the joining conditions. The method of lines is used successfully in the computation to exhibit realistic solutions. The model and the computation could be used to simulate the sintering of a cluster of particles by “patching”.