Mechanism for Corrosion Prevention by a Mechanical Plating of Uniform Zinc-Iron Alloy
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In situ electrochemical monitoring with a three-electrode cell was applied to investigate the anti-corrosion properties of a mechanical zinc-iron alloy plating. Several electron probe microanalyses were also conducted to identify the chemical elements in the plating. The results indicated the formation of a Zn-Fe intermetallic compound, which allowed a mechanism for corrosion prevention to be proposed. In the proposed mechanism, Zn(OH)2 plays a significant role in the corrosion prevention of steel alloys.
Keywordsanti-corrosion mechanism corrosion electron probe microanalysis inorganic coatings mechanical plating zinc-iron alloy
This study was financially supported by the Yokohama National University and Nippon C&Z Co., Ltd. The authors would like to thank Mr. Shiraga and the Instrumental Analysis Center of Yokohama National University for conducting the x-ray diffraction analysis. The authors would also like to thank Mr. Ishizuka for useful discussion and comments.