ارزیابی رفتار سایشی و خوردگی پوششهای کامپوزیتی نانوساختار Ni-P-Al2O3

In this research, alumina particles within ni-p electroless coating were co-deposited on mild carbon steel substrate. the structure of the coatings was investigated by x-ray diffraction (xrd) analysis and the particles content in ni-p-al2o3 coating was determined by image analysis software and using the micrographs obtained by scanning electron microscopy (sem). the tribological behavior of the coatings was evaluated by pin-on-disc method and by using 52100 steel pins. potentiodynamic polarization and electrochemical impedance spectroscopy (eis) methods were also used to study the corrosion behavior of the coatings in 3.5wt.%nacl solution. the results showed that the hardness and wear resistance have increased with raising the alumina particles in nanostructure ni-p-al2o3 composite coating, whereas the corrosion resistance has decreased due to the activation of pitting corrosion.