Abstract
Mg was evaporated onto GI substrate. With annealing followed, Zn-Mg alloy coating was acquired. Microstructure and chemical element of Zn-Mg alloy coatings were analyzed by SEM and EDS respectively. Anti-corrosion performance of Zn-Mg alloy coatings was studied by salt spray test (SST) and electrochemical test. Alloy phases and corrosion products were inspected by XRD. Study showed that Zn-Mg alloy phase was mainly MgZn2 , MgZn, Mg2Zn11 and Mg7Zn3. The alloy coatings had excellent corrosion resistance on coating surfaces and even at cut edges. Compared with GI, Zn-Mg alloy coatings have lower Icorr current and bigger polarization resistance. And its corrosion products are more compact.
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Liu, Q. Y., Jiang, S. M., Xi, Z. G., Zhang, Q. F., Liu, X., & Yue, C. F. (2015). Microstructure and Corrosion Resistance of Zn-Mg Alloy Coatings. In 10th International Conference on Zinc and Zinc Alloy Coated Steel Sheet, Galvatech 2015 (pp. 834–844). Association for Iron and Steel Technology, AISTECH. https://doi.org/10.12783/dtmse/smne2016/10568
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