レーザー溶隔処理によるアルミナ溶射皮膜の構造変化 (第3報) : 計算機シミュレーションによる解析

概要

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A simulation program of temperature analysis was constructed for laser treatments of ceramics. It is based on axially symmetric, transient heat conduction equations governing laser heating process and takes the temperature-dependent material properties and moving heat source into consideration. The non-linear fundamental equation was transformed into finite difference equation to carry out the numerical computations. This simulation program was applied to the surface modification of alumina-sprayed coatings. The width and depth of the melted zone of the coatings were calculated for various parameters of laser treatments, the results of which were compared with the previous experimental ones. Both results were approximately in good agreements. The phase change region of the alumina coatings obtained experimentally was confirmed by this simulation technique. It is concluded that this simulation technique is useful to the surface modification process of ceramics.
社団法人日本セラミックス協会の論文
1996-07-01