Evaluation of the Effects of Powder Coating Cure Temperatures on the Mechanical Properties of Aluminum Alloy Substrates
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The effects of curing temperature, based on new, low-temperature powder coating methods and traditional high-temperature powder coating methods, were studied. Heat-sensitive aluminum alloys (2024-T3, 6061-T6, and 7075-T6) were subjected to two different heat-treatment cycles, which were based on temperatures of 121 and 204 °C. Findings indicate that although both cure temperatures achieved powder coatings adhesion and thickness appropriate for industrial uses, the high-temperature cure treatment negatively affected the mechanical properties.
Keywordsage hardenable aluminum alloys degradation of mechanical properties low-temperature cure powder (LTCP) solvent-borne paints
The authors thank the National Science Foundation for providing the RET supplement to the NSF grant #EEC-0353668 which enabled this work to be performed. Ms. Esther Bolding and Ms. Mary Poats are the program managers. The authors would also like to thank Ms. Jasmin Abdulla for preparing the manuscript.
- 1.G. Merfeld, 120 °C Cure, Durable, Corrosion Protection Powder Coatings for Temperature Sensitive Substrates, General Electric Global Research, 2005Google Scholar
- 2.Program Progress Report #6 For Phase I Option, Advanced Nonskid Coating System, Unpublished, 2006Google Scholar
- 3.Metals Handbook Eighth Edition, vol. 1. Properties and Selection of Metals, American Society for Metals, Ohio, 1977, p 865Google Scholar
- 4.AMS-QQ-A-250, Aerospace Material Specifications, SAE, Warrendale, PA, 1998Google Scholar