2球粒子と多球粒子モデルの粒成長速度におこる局在化問題

概要

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The problem of localization on grain growth was investigated in relation to two-sphere and uniform polysphere grain models. The new rate equations for grain growth were formulated based on Inomata's free energy theory for mass transport and Tanaka's definition of diffusion area and length. The equations included parameters for the grain size ratio, the ratio of grain boundary energy to surface energy, and the size of the system. From the equations, the growth rates were calculated as a function of the total system size. The results indicate that in the two-sphere model, the growth rate has a maximum at a certain system size meaning that grain growth was localized in the growing grain. However, in the poly-sphere grain model, the growth rate for large grains was not shown to be significantly depended on the size of the system.
社団法人日本セラミックス協会の論文
1998-01-01