Electroless Nickel Plating on ME20M Magnesium Alloys with an Environmentally-Friendly Pretreatment

Abstract:

Coating of ME20M magnesium alloys was first carried out using electroless nickel plating technique with an environmentally-friendly pretreatment. The morphology and specific weight loss of the pickling process were investigated. The Ni-P coating was characterized by its structure, morphology, chemical composition, adhesion strength and corrosion resistance. The SEM image shows that the pyrophosphate pickling process can produce a rough surface and the thermal shock test indicates excellent adhesion strength between magnesium alloys and Ni-P coating. The damp heat test and electrochemical measurement prove the Ni-P coating significantly increase the corrosion resistance of ME20M magnesium alloys.

• Periodical: Advanced Materials Research (Volumes 750-752)
• Pages: 2063-2069
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.750-752.2063
• Online since: August 2013
• Authors: Cui Tian Guo*, Shi Gang Xin, Qing Huang
• Keywords: Corrosion Resistance, Electroless Nickel Plating, Magnesium, Ni-P Alloy, Pretreatment

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