B, barrier type protective effect when the cold sprayed zinc coating is oxidation, will produce a layer of zinc salt in the coating surface to provide barrier protection.
屏障式保护作用当冷喷锌涂料被氧化时，会在涂料表面产生一层锌盐层来提供屏障保护。
2
Therefore, the barrierlayer can prevent grinding fluid from infiltrating to the substrate during the polishing process, and further improve the effect and the quality of polishing and grinding.