مريم عليمراديان

Ni-Co-W composite coatings show good hardness, corrosion and wear resistance and can be a good alternative to Ni-Co and Ni-W composite coatings. In this research, Ni-Co-W/SiC coatings were created using pulsed current on aluminum 6061 substrate and their wear behavior was investigated, and the effect of cycle parameters and particle concentration in the bath was eva‎luated. Surface morphology, microstructure, particle distribution and weight percentage of particles in the coating were investigated using scanning electron microscope (SEM) and analysis (EDS). The crystallite size of the coating was calculated using X-ray diffraction analysis (XRD) and using Scherer's equation. The hardness of the coating was measured by a microhardness meter and the wear behavior was eva‎luated using the pin-on-disk wear test. The Ni-Co-W/SiC coating made in optimal conditions has the highest micro-hardness of 491.35 Vickers, the lowest friction coefficient equal to 0.125, the lowest wear rate equal to 0.001 mg/m and the lowest weight loss equal to 0.3 mg has been

رسوب الكتريكي , جريان پالسي , پوشش‌ كامپوزيتي Ni-Co-W/SiC , مقاومت به سايش

Electrodeposition , Pulse current , Ni-Co-W/SiC composite coating , wear resistant

maryam alimoradian

saeed rastegari