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Reduced Finishing Costs for Aluminum Intensive Vehicles
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English
Abstract
Due to the inherently superior corrosion resistance of aluminum compared to automotive steels, phosphating and electrocoating are not necessarily required to provide good corrosion protection to aluminum intensive vehicles. This allows the potential for significant cost savings in the overall finishing process by eliminating these steps. Advantage can also be taken of the movement towards the use of powder primer surfacers to reduce solvent emissions in that the powder coating can be applied directly to a suitably pretreated aluminum surface. Pretreatments which are optimized for aluminum and much simpler to control than phosphating were chosen for trials based upon discussions with chemical suppliers. In this paper, the adhesion and corrosion characteristics of these selected pretreatment/powder primer systems were compared to standard phosphated and electrocoated AA6111 automotive closure sheet. Topcoat compatibility of the powder coatings were also evaluated in terms of distinctness of image and stone chip performance. A description of the simplified finishing process is included.
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Citation
Courval, G. and Daniell, P., "Reduced Finishing Costs for Aluminum Intensive Vehicles," SAE Technical Paper 960170, 1996, https://doi.org/10.4271/960170.Also In
References
- Courval G. Allin J. SAE Paper 920280 1992
- Ikeda K. Takel N. Ueda T. Kobe Steel R & D Reports 43 3 1993 55 58
- Roland W.A. Metal Finishing December 1993
- Cassidy V.M. Modern Metals September 1993
- North American Business Report 25 May 1994