Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8000674 | Journal of Alloys and Compounds | 2014 | 12 Pages |
Abstract
A comparative study of the electric arc-sprayed (AS) and zinc-rich powder (ZRP) coatings, was performed in sulfur-rich environment involving atmospheric corrosion test and cyclic wet-dry test. The surface morphologies and characterization of corrosion products were investigated using SEM/EDS, XRD and EPMA techniques. The anti-corrosion properties of both coatings were compared by taking electrochemical measurements. The results revealed that the corrosion resistance of the ZRP coating was higher than that of AS one in the experimental test. A general sequence for the evolution of corrosion products on zinc coatings in sulfur-rich environment was proposed: Zn â ZnO/Zn(OH)2/ZnSO4 â Zn5(CO3)2(OH)6 â Zn4SO4(OH)6/ZnSO4â
7H2O.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Hongying Li, Junying Duan, Xiaobing Min,