Study on Corrosion Resistance of Spray Zn85Al Alloy Coating for Steel Construction
XIAO Yi-de， FU Zhi-yong，ZHU Peng，XIAO Yu-xing，PAN Ying，WU Jian-hua
CNKI
Abstract：Al content impacting on the Zn-Al alloy’s corrosion resistance is studied by exposure tests in the atmosphere，water environment and laboratory’s NSS，full immersion and immersion / drying cycle test in NaCl solution, and electrochemical test. Based on this, difference on corrosion resistance and electrochemical protection between Zn85Al alloy coating and the traditional ZnAl alloy coatings by thermal spraying on steel substrate are analyzed and compared. It is showed Zn-15Al alloy coating has both electrochemical protection as Zn coating，but also high corrosion resistance characteristics as Al coating. At present，Zn85Al alloy coatings by thermal spraying have been used on national water conservancy，bridge and other key infrastructure projects.
Keywords：Thermal spraying；Metallic coating；Protective properties
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