Influence of Heat Treatment on Corrosion Resistance of Sn/Mg Films Formed by PVD Method on Hot-Dip Galvanized Steel

被引：1
作者：
Hwang, Sung-Hwa [1 ]
Lee, Seung-Hyo [2 ]
Lee, Myeong-Hoon [1 ,3 ]
机构：
[1] Korea Maritime & Ocean Univ, Dept Marine Engn, Busan 49112, South Korea
[2] Korea Maritime & Ocean Univ, Dept Ocean Adv Mat Convergence Engn, Busan 49112, South Korea
[3] Korea Maritime & Ocean Univ, Interdisciplinary Major Maritime AI Convergence, Busan 49112, South Korea
来源：
COATINGS | 2023年 / 13卷 / 01期
关键词：
corrosion resistance; hot-dip galvanized steel; physical vapor deposition; heat treatment; intermetallic compounds; salt spray test; potentio dynamic polarization test; ZN-AL-MG; THIN-FILMS; COATINGS; BEHAVIOR; ZINC; MORPHOLOGY; PRODUCTS; SN; MICROSTRUCTURE; MECHANISM;
D O I：
10.3390/coatings13010196
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Double layers composed of Sn and Mg, each 0.8 mu m thick, were fabricated on a hot-dip galvanized steel (8.4 mu m) sheet using DC magnetron sputtering and post-annealing processes. With an increase in temperature, the surface morphologies were agglomerated with each other. Additionally, Sn/Mg mixture sites, including an intermetallic compound of Mg2Sn, were formed at 190 degrees C and locally clustered at 220 degrees C. In the salt-spray test, the corrosion resistance of the Sn/Mg film prepared at 190 degrees C was 960 h, which is longer than that at non-heat for 528 h or 220 degrees C for 480 h. In the polarization test, the Sn/Mg film formed at 190 degrees C displayed a lower corrosion current density of 1.07 mu A/cm(2) and potential of 1.62 V/SSCE than those at non-heat or 220 degrees C.
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页数：11
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