爆発溶射によるセラミック被膜の形成過程における温度場と応力場の解析

概要

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An analytical method was proposed to evaluate the unsteady temperature and stress fields during the ceramic coating process. The proposed procedure was developed by means of finite element modeling. In the modeling, the temperature and stress fields were assumed to be one-dimensional and axi-symmetric, respectively. This assumption was based on the fact that the thickness of the coating layer is small compared with the dimensions of the coated surface area. A simulation using the proposed model was conducted for the detonation coating of alumina on steel as a discontinuous coating process. The temperature variation with respect to time during and after the coating process was simulated by the selection of a suitable combination of heat-transmission parameters. The results almost coincided with the experimental observation. The simulated results for the stress field indicated that the residual stress generated in the coated ceramic layer was tensile and extremely large.
一般社団法人日本機械学会の論文
1992-10-25