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Development of an Improved Cosmetic Corrosion Test for Finished Aluminum Autobody Panels
- Francine Bovard - Alcoa ,
- Janice Tardiff - Ford Motor Co. ,
- Tracie Piscopink-Jafolla - General Motors ,
- Duncan McCune - Quality/Statistics ,
- Greg Courval - Novelis ,
- Kevin A. Smith - Auto Technology Company ,
- Fred Lee - Atlas Material Testing Technology LLC ,
- Sridhar Ramamurthy - The University of Western Ontario ,
- Ray Singleton - Singleton Corporation ,
- Florina M. Vartolas - Chrysler Corporation
ISSN: 1946-3979, e-ISSN: 1946-3987
Published April 14, 2008 by SAE International in United States
Citation: Bovard, F., Tardiff, J., Piscopink-Jafolla, T., McCune, D. et al., "Development of an Improved Cosmetic Corrosion Test for Finished Aluminum Autobody Panels," SAE Int. J. Mater. Manf. 1(1):591-599, 2009, https://doi.org/10.4271/2008-01-1156.
A task group within the SAE Automotive Corrosion and Protection (ACAP) Committee continues to pursue the goal of establishing a standard test method for in-laboratory cosmetic corrosion evaluations of finished aluminum auto body panels. The program is a cooperative effort with OEM, supplier, and consultant participation and is supported in part by USAMP (AMD 309) and the U.S. Department of Energy. Numerous laboratory corrosion test environments have been used to evaluate the performance of painted aluminum closure panels, but correlations between laboratory test results and in-service performance have not been established. The primary objective of this project is to identify an accelerated laboratory test method that correlates with in-service performance. In this paper the type, extent, and chemical nature of cosmetic corrosion observed in the on-vehicle exposures are compared with those from some of the commonly used laboratory tests