Study of the effect of some technological factors on the surface morphology of galvanized layers using Hull method

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Abstract

This paper uses Hull method with acid coating solution by 1-way current plating technique to determine the appropriate technological conditions. The results show that the salt concentration, additive ratio, temperature and pH of the plating solution have a very clear influence on the surface morphology of the plating. The components in the optimal coating solution are as follows: ZnCl₂ 60 g/L, NH₄Cl 250 g/L, AZA 30 mL/L, AZB 1.5 mL/L; 20 – 30 ^oC; pH 5.0 - 5.3.