The Wear Performance of Ni-TiO2 Nanocomposite Coatings

Ni-matrix nanocomposite coatings with various contents of TiO2 nanoparticles were prepared by electrodeposition in a Ni plating bath containing TiO2 nanoparticles to be codeposited. The wear behavior of the pure Ni and Ni-TiO2 nanocomposite coatings were evaluated by a pin-on-disc tribometer. The worn surface of coating was observed using a scanning electron microscope (SEM). It was found that the microhardness and wear resistance of the nanocomposite coatings increase with increasing of TiO2 nanoparticles content in the coating. The worn surface morphologies show that the Ni-TiO2 nanocomposite coatings exhibit less abrasive width and depth and less tendency for plastic deformation.

کلیدواژه ها:

Ni-matrix Nanocomposite ، Wear ، Hardness ، Pin-on-disc tribometer