Abstract
An experimental study of twin-wire electric arc spraying of zinc/aluminum alloy coatings demonstrates the suitability of the systems for anticorrosion applications. Experiments were conducted using Boxtype, fractional-factorial designs. The process parameters that were varied include nozzle diameter, current, spray distance, and system pressure. The experiments were designed to display the range of processing conditions and their effect on the coating. The coatings were characterized with bond strength and deposition efficiency tests and optical metallography. Coating characteristics were quantified with respect to roughness, porosity, thickness, bond strength, and microstructure. Performance evaluation of the coatings was quantified with accelerated corrosion testing. A parameter-property-performance relationship has been developed for each material system. This paper presents the results of material systems 85Zn/15Al and 70Zn/30Al.
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Varacelle, D.J., Zeek, D.P., Zanchuck, V. et al. Experimental studies of twin-wire electric arc sprayed zinc/aluminum alloy coatings. J Therm Spray Tech 7, 513–520 (1998). https://doi.org/10.1361/105996398770350738
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DOI: https://doi.org/10.1361/105996398770350738