Study on the influence of spray parameters of Ar - N 2 Plasma spray process using CFD analysis
نویسندگان
چکیده
Thermal sprayed surface coatings are extensively used for a wide range of industrial applications. In the plasma spray process used in thermal spraying, the temperature of substrate and conduction of heat along the thickness of ceramic oxide coatings (TCOC) play an important role in the bond strength and microstructure of the coatings, which decides its performance and quality. In this study, using Ansys-CFX, a 3D numerical model is developed to study heat exchange between plasma jet and substrate and along the TCOC to predict life of the coating. The plasma jet temperature, velocity distribution and heat exchange to the substrate surface and coatings have been thoroughly analyzed for the effects of various spray parameters (SP) such as gas composition, standoff distances (sod), velocity and temperature of a jet. It is found that 3D modeling has shown promising results on substrate heating. The effect of spray parameters could also be assessed and validated by comparing with experimental results.
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