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Original Articles

Fabrication of zinc-aluminum composite coating on stainless steel with long-term protection durability

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Pages 55-62 | Received 10 Jun 2019, Accepted 03 Jan 2020, Published online: 20 Jan 2020
 

ABSTRACT

A zinc-aluminum (Zn-Al) composite coating was prepared on a 304 stainless steel surface by dip coating and a thermal sintering method. The microstructure and the phase composition of the composite coating were analysed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Open-circuit potential (OCP), potentiodynamic polarisation curves and electrochemical impedance spectroscopy (EIS) were used to study the electrochemical properties of the coating. The results demonstrate that the Zn-Al composite coating can effectively decrease the corrosion rate of stainless steel, providing an excellent way to solve the corrosion problem in harsh environments.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The work was supported by the open project of Key Laboratory of Space Launching Site Reliability Technology [grant number 27JDSYSKFKT-2016/03].

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