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Abstract
Experimental design is an effective means of producing optimum spraying parameters to enhance thermal sprayed coatings. A range of WC-Co coatings is widely used in the aircraft industry to resist severe wear environments. The Box, Bisgaard, and Fung experimental design method was employed to study the relationship between plasma spraying parameters and coating properties for WC-12Co coatings. The coating properties examined were hardness, bond strength, porosity, and microstructural evaluation.