Corrosion resistant nickel coating with strong adhesion on AZ31B magnesium alloy prepared by an in-situ shot-peening-assisted cold spray

By Yingkang Wei, Yu-juan Li, Yue Zhang, Xiao-Tao Luo, Changjiu Li. Corrosion Science, 2018

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Abstract A 150 μm thick fully dense Ni coating was deposited on AZ31B magnesium alloy by a newly developed in-situ shot-peening-assisted cold spray process. Strong adhesion strength of Ni coating (>65.4 MPa) was achieved. The present Ni coated AZ31B reveals comparable electrochemical behavior with annealed bulk Ni in 3.5 wt.% NaCl aqueous solution. Long-term immersion test (1000 h) and NaCl salt spray test (1000 h) further verified the robust corrosion resistance of the cold sprayed Ni coating. This work provides a novel green approach for corrosion protection of magnesium alloys.

Subfields: Aerospace Engineering, Biomaterials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/417933f37da82e264204c00ad8cfa032162ebc6f