New pattern Zn-Al-Mg-RE coating technics for steel structure sustainable design

Yan Liu; Bin-shi Xu; Zi-xin Zhu; Zhuo-xin Li; Jie Ma

doi:10.1007/s11771-005-0043-8

Journal of Central South University ›› 2005, Vol. 12 ›› Issue (2) : 211 -214. DOI: 10.1007/s11771-005-0043-8

Emerging Technology (Information, Micro-Nano, Bio Technology) In Developing Of Sustainable Manufacturing

New pattern Zn-Al-Mg-RE coating technics for steel structure sustainable design

Yan Liu ¹^,²^,^a
, Bin-shi Xu ¹
, Zi-xin Zhu ¹^,³
, Zhuo-xin Li ²
, Jie Ma ⁴

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Abstract

Based on the advanced integrated technology of materials preparation and formation, a new pattern Zn-Al-Mg-RE anti-corrosion coating for steel structure sustainable design was manufactured by cored wires and high velocity arc spraying (HVAS) technologies. The developments of thermally sprayed coatings for steel structure protection were described. Based on Al, Zn, Zn-Al and Zn-Al-Mg coatings, the anti-corrosion properties of new-pattern Zn-Al-Mg-RE coating were evaluated through electrochemical methods including electrochemical polarization and electrochemical impedance spectroscopy (EIS) coupled with SEM and XRD. The models of Zn-Al-Mg-RE coating undergoing corrosion with the initial pinhole defect and the latter with accelerated products were also discussed. The results show that Zn-Al-Mg-RE coating exhibites excellent corrosion resistance for long-term immersion, which is helpful for the sustainable design of steel structure in aggressive corrosion conditions. And the corrosion products seem to possess certain self-sealing function.

Keywords

integration of materials preparation and formation / Zn-Al-Mg-RE coating / sustainable design / cored wires / high velocity arc spraying

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Yan Liu, Bin-shi Xu, Zi-xin Zhu, Zhuo-xin Li, Jie Ma. New pattern Zn-Al-Mg-RE coating technics for steel structure sustainable design. Journal of Central South University, 2005, 12(2): 211-214 DOI:10.1007/s11771-005-0043-8

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