Open AccessEffect of Magnesium on Corrosion Resistance of Galvalume Coating
Author(s) -
Zihao Ding,
J Zhang,
S.M. Jiang,
Q F Zhang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2101/1/012078
Subject(s) - corrosion , microstructure , coating , magnesium , materials science , metallurgy , polarization (electrochemistry) , salt spray test , electrochemistry , magnesium alloy , composite material , chemistry , electrode
In order to improve the performance of Galvalume coating, the expected microstructure and the better property could be obtained by adding 1∼3% Magnesium into Galvalume coating (55%Al-Zn). In this paper, effect of magnesium on the corrosion resistance of 55%Al-Zn coating was studied. The morphology and microstructure of coatings, polarization curve and surface corrosion of two different kinds of samples were analysed by SEM, EDS, electrochemistry workstation and salt spray test. The results show that the numbers of surface spangles by adding 2% magnesium are not changed obviously; the corrosion resistance of 55% Al-Zn-2%Mg coating becomes much better.