The corrosion resistance of Ni-TiO2 and Ni-SiC nanocomposite coatings prepared by brushplating technology

Abstract

Brush plating is an electroplating process which issimilar to painting operation. By using compact equipment, brush plating is easily carried out at the jobsite. Nowadays, this technology has been proved to have widespread applications in  engineering, especially in which requiring high corrosion resistance.

Nanocomposite  containing  titania  and/or  silicon  carbide  nanoparticles  in  a  nickel  matrix has been prepared by brush plating method. Depositshave been characterized by EDS and SEM for  structural  analysis.  Corrosion  properties  and  microhardness  have  also  been  investigated. Besides,  pure  Ni  deposits  were  also  produced  under  the  same  experimental conditions for comparison. Experimental results showed that the change in current density and the content of nano SiC and nano TiO₂ could change the structure and corrosion resistance of nanocomposite coatings.