Collation Research of Salt Spray Test of the Coating Specimens

Based on salt spray test‚, two kinds of methods to investigate the coating sample such as remnant adhesive force detection and "×" stroked spot corrosion state examination are put forward and are applied in the evaluation of some coating systems including high chlorination priming paint+high chlorination lacquer(C)‚, epoxy priming paint+high chlorination lacquer (HC)‚, epoxy priming paint+engineering lacquer(HG) and high chlorination priming paint+engineering lacquer(CG).The results indicate that the high chlorination coating is obstructive to corrosive medium but brittle‚, the epoxy primer paint provides perfect adhesive and the engineering lacquer has poor adhesive to the primer.The HC coating system displays better anticorrosion property.