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Validation Testing of an Environmentally Friendly, Corrosion-Resistant Coating for Brake Rotors
Technical Paper
2001-01-3157
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The European End-of-Life Scrap Vehicle Directive approved in September of 2000 effectively bans the use of hexavalent chromium in automotive applications after July 1, 2003. In response to the directive, The United States Council for Automotive Research (USCAR) will disallow the use of hexavalent chromium in corrosion-resistant coatings effective July 1, 2002. A new, chromium-free coating became commercially available in 1998 which provides a solution to this new directive.
The coating is zinc- and aluminum rich, silver in color, thin, water-based, volatile organic compound (VOC) compliant, and contains no toxic metals. It is heat resistant and offers excellent corrosion protection without adversely affecting brake performance.
This report summarizes validation testing for the automotive industry of brake rotors coated with the new, chromium-free coating. Corrosion testing was conducted by an independent laboratory and included neutral salt spray, water fog and adhesion, and 350°C (662°F) heat to part metal temperature followed by SAE J2334 cyclic testing. Dynamometer testing was conducted by a separate independent laboratory.
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Authors
Topic
Citation
Dorsett, T., Klimowski, M., and McKerrell, M., "Validation Testing of an Environmentally Friendly, Corrosion-Resistant Coating for Brake Rotors," SAE Technical Paper 2001-01-3157, 2001, https://doi.org/10.4271/2001-01-3157.Also In
References
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- Guhde D. J. Dorsett T. E. Maze E. Germano V. V. Gunn W. H. “Water-Reducible Coating Composition for Providing Corrosion Protection” Aug. 7 2001
- Townsend H. E. McCune D. C. “Round Robin Evaluation of a New Standard Laboratory Test for Cosmetic Corrosion” Corrosion Prevention, SP1265 Society of Automotive Engineers Warrendale, PA 1997 53 68
- Granata R. D. Moussavi-Madani M. “Characteristics of Corrosion Products and Corrosion Mechanisms on Automotive Coated Steels Subjected to Field and Laboratory Exposure Tests” Corrosion Prevention, SP-1265 Society of Automotive Engineers Warrendale, PA 1997 85 98
- Dorsett T. E. Guhde D. J. “Development of an Environmentally Friendly Corrosion Resistant Coating for Fasteners” SAE Paper 1999-01-0901 Mar. 1 1999