Homogenization theory applied to plasma sprayed coating - modelling and numerical simulation of the temperature field

Rapid Plasma Spray Tooling is a kind of process that can quickly make mold from rapid prototyping or nature pattern without limitation of pattern's size or material. As spray formed materials can contain porosity in varying quantities, in previous investigation of the authors, the process of coating growth in RPST has been analyzed numerically to determine the porosity in plasma sprayed coating. In this study, the homogenization method is used to simulate the temperature field in the coating during plasma spraying process. The objective of this work is to determine the physical properties of plasma sprayed coating with mesoscopic pores, which is important to calculate the thermal residual stress in plasma sprayed coating.