This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effects of Surface Texture on the Appearance and Corrosion of Painted Aluminum Body Sheet
Annotation ability available
Sector:
Language:
English
Abstract
Studies have indicated that enhanced corrosion resistance and appearance after painting can be obtained on automotive steels by texturing the sheet surface. To determine whether these same improvements could be obtained on aluminum, paint performance and appearance were evaluated on heat treatable alloys that had been given shot dulled and laser textured finishes. Corrosion performance was measured by filiform and SCAB tests and paint appearance by distinctness of image (DOI). Profilometry was used to characterize the roughness of the sheet surface at various stages of paint application. Experiments demonstrated that corrosion performance was not significantly affected by surface texture. However, the DOI of painted textured surfaces varied with the extent of reduction of the sheet when rolled and, in particular, with the paint system. Mill finish aluminum was shown to have DOI equivalent to that achieved on cold rolled or electrogalvanized steels.
Topic
Citation
Courval, G. and Allin, J., "Effects of Surface Texture on the Appearance and Corrosion of Painted Aluminum Body Sheet," SAE Technical Paper 930702, 1993, https://doi.org/10.4271/930702.Also In
References
- Furukawa K. et al Kawasaki Steel Technical Report No. 20 103 110 1989
- Nishumura K. et al Iron and Steel Engineer 46 51 August 1991
- Ujihara S. et al Iron and Steel Engineer 52 56 August 1991
- Matsuoka S. et al US Patent 4,775,599
- Suguhi T. Ikeda H. Sumitomo Light Metal Technical Report 20 12 22 1979