Abstract
Thermal Barrier Coating (TBC) is fabricated by thermal spray technology. By plasma spraying coating particles are melted in high temperature plasma flow and impinged and deposited continuously to a substrate surface. Since a coating layer is formed in this way it seems that the structure and the mechanical properties of TBC are influenced by spray condition. In this study, we varied the substrate temperature and the particle velocity of the coating material in plasma flow about spray condition in plasma spraying and measured coefficient of thermal expansion, elastic modulus, crack length, Vickers hardness, porosity and bending strength of the ceramic layer.
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