Effect of Plasma Spraying Parameter on Mechanical and Tribological Property of Cr$_2$O$_3$ Coating Layer on AZ9lD Commercial Magenesium Alloy

AZ9lD 상용 마그네슘합금에 코팅된 Cr$_2$O$_3$층의 기계적 및 내마모 특성에 미치는 플라즈마 용사조건의 효과

The experimental study has been performed to deposit to deposit chromia powder on magnssium alloy for tribological and mechanical properties. The optimal condition was obtained by changing the spray condition such as working distance and gun power. As ceramics was coated onto the a light metal such as Mg according to the weight reduection of the car engine block, it could acquire that the engine efficiency deu to the weight reduction and properties such as resistance to heat, as well as wear. Coating qualities are discussed with respect to hardness, tribologicalproperty, and microstructure. The tribological and mechanical properties are investigated by using the reciprocal configuration tribometer and microharduess tester. Wear mode is determined by observing the SEM morhpology of wear track and cross section view of wear track.