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Zn-Ni Plating as a Cadmium Alternative
Technical Paper
2007-01-3837
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In a 2-year program sponsored by SJAC, an aqueous electroplating process using alkaline Zn-Ni with trivalent chromium post treatment is under evaluation for high strength steel for aircraft application as an alternative to cadmium. Commercial Zn-15%Ni rack/barrel plating solutions are basis for plating aircraft parts or fasteners. Brightener was reduced from the original formula to form porous plating that enables bake-out of hydrogen to avoid hydrogen embrittlement condition. Properties of the deposit, such as appearance, adhesion, un-scribed corrosion resistance, and galvanic corrosion resistance in contact with Al alloy, were evaluated. Coefficient of friction was compared with Cd plating by torque-tension measurements. Evaluation of the plating for scribed corrosion resistance, primer adhesion, etc. will continue in FY2007.
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Citation
Taniguchi, T., Saito, H., Yamada, M., Iobe, H. et al., "Zn-Ni Plating as a Cadmium Alternative," SAE Technical Paper 2007-01-3837, 2007, https://doi.org/10.4271/2007-01-3837.Also In
References
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