Abstract：Sodium perborate and molybdate were used as accelerant to prepare the conversion fluid. The process of nucleation and growth of vanadate conversion coating were observed by scanning electron microscopy. The film weight was analyzed by chemical method and the corrosion resistance of the coating was tested by neutral salt spray test，the corrosion behavior of the coating in 5%NaCl was analyzed by electrochemical workstation. The results indicate that sodium perborate improved the mass percent of vanadium compound in the transformation film，and it was helpful to create thick and dense transformation film；sodium molybdate can promote the nucleation of conversion film and accelerate the initial growth rate of the film. In the corrosion environment，mixed valence state compound of vanadium can protect the zinc layer by inhibition the reduction of oxygen in the cathode area.
张子月，俞钢强，江社明，高志强，刘 昕. 钼和硼对热镀锌钢板表面矾酸盐成膜的影响[J]. , 2018, 53(8): 96-101.
ZHANG Zi-yue，YU Gang-qiang，JIANG She-ming，GAO Zhi-qiang，LIU Xin. Effect of molybdate and borate on vanadate conversion film in hot galvanizing. Iron and Steel, 2018, 53(8): 96-101.