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Corrosion Protection Measures on an All-Aluminum Body
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English
Abstract
A body shell manufactured entirely of aluminum alloys is generally regarded as being insensitive to corrosion. The following paper confirms this assessment but specific types of corrosion affecting aluminum have to be avoided. The experience on which it is based includes vehicles with aluminum components driven in the field by customers, but is mainly derived from corrosion testing on specimen components and complete vehicles performed during the course of development. The most critical type of damage occurring is contact corrosion caused by other metals and conductive plastics. If the conversion coating on the metal is unsuitable, paint adhesion is insufficient and the characteristic aluminum filiform corrosion will start to form. Corrosion in crevices and beneath accumulated dirt is also likely to occur. This paper describes suitable protective measures, and also refers to repair techniques designed to avoid corrosion.
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Authors
Citation
Dietz, R., "Corrosion Protection Measures on an All-Aluminum Body," SAE Technical Paper 932360, 1993, https://doi.org/10.4271/932360.Also In
References
- Dietz, R. “A Three-Chamber Corrosion Test Method for Passenger Cars” SAE Paper 83 1814 → INKA-Test: Cycling corrosion test of AUDI AG, further development of IN-Test
- Roland, W. A. 32 1988 28 32
- →
- Kaesche, H. Springer Verlag 2nd 174
- Komatsu, Y. et al. “New Pretreatment and Painting Technology for All-Aluminum Automotive Body” SAE Technical Paper 910887
- Kötting, G. 1 13 1993 Schindel-Bidinelli E.
- Wagner, G. “Adhesion of Paints to Aluminium” EuroCoat 7-8 1991 456 461