Abstract: The oxidized behavior of three electrodeposited Ni matrix composite coatings Ni-B4C, Ni-TiC, Ni-ZrO2 at 850℃ temperature has been investigated. It was found that their anti-oxidization ability mainly depends upon the nature of particles. The composition of oxidized products of the above coatings was analyzed by ESCA and X-ray diffraction methods. Experimental results show that if the oxide of particles enrich the surface and forms a entire film after oxidization at high temperature, these coating could obtain certainly a good anti-oxidization ability.

Key words: electrodeposition, Ni-matrix composite coating, anti-oxidized behavior at high tempserature