This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Atmospheric Corrosion Mechanisms of Painted Steel
Annotation ability available
Sector:
Language:
English
Abstract
Electron microscopy and microprobe analysis were used to study the spread of corrosion beneath an acrylic paint film on steel. Corrosion initiates beneath the paint film in crevices formed by scribing. Corrosion spreads as the build up of corrosion products beneath the paint film drives a crack along the paint/substrate interface. The buildup of corrosion products cause defects to form in the paint film. Phosphating reduces the corrosion rate by increasing the polymer/substrate adhesion and slowing down crack growth at the interface. The improved adhesion can be explained in terms of acid-base interactions between the polymer and substrate. Sulfur was identified in the corrosion products of the one sample which was studied. The sulfur is presumed to be from atmospheric pollutants.
Recommended Content
Aerospace Material Specification | Polytetrafluoroethylene (PTFE) Resin Coating, High Build, 370 to 400 °C (698 to 752 °F) Fusion |
Aerospace Material Specification | Sealing Compound, Polysulfide (T) Rubber, Fuel Resistant, Non-Chromated Corrosion Inhibiting for Intermittent Use to 360 °F (182 °C) |
Technical Paper | Effect of Bimetallic Coupling on Automotive Pretreatment Quality |
Citation
Standish, J., "Atmospheric Corrosion Mechanisms of Painted Steel," SAE Technical Paper 830489, 1983, https://doi.org/10.4271/830489.Also In
References
- American Society for Testing and Materials B117
- Westberg J. Borjesson, L. Paper Number 278, Corrosion 80, National Association of Corrosion Engineers 1980
- Takahashi H. et al, Society of Automotive Engineers Paper 800145 1980
- Nowwak, E. T. Franks, L. L. Froman, G. W. Society of Automotive Engineers Paper 82047 1982
- Hospadaruk V. et al., Society of Automotive Engineers Paper 780186 1978
- Corrosion Control by Coatings Leidheiser H. Jr. Science Press Princeton, NJ 1979
- Corrosion Control by Organic Coatings Leidheiser H. Jr. National Association of Corrosion Engineers Houston, Texas 1981
- Dickie R. A. Smith, A. G. Paper Number 126, Corrosion 80, National Association of Corrosion Engineers 1980
- Roberts, T. R. Kolts, J. Steele, J. H. Jr Society of Automotive Engineers Paper 800443 1980
- Iezzi R. A. Leidheiser, H. Jr Corrosion 37 28 1981
- Hammond J. S. Holubka J. W. Dickie R. A. Coatings J. Technol. 51 655 45 1979
- Roller, M. B. Ctgs. J. Technol 54 691 33 1982
- Zosel, A. Prog. Org. Coatings 8 47 1980
- Standish J. V. Leidheiser, H. Jr Ctgs. J. Technol 53 678 53 1981
- Walton, J. R. Johnson, J. B. Wood, G. C. Br. Corr. J 17 59 1982
- Koehler, R. R. unpublished results
- Van der Berg, W. Van Loar, J. Suurmond, J. Third Int. Conf. on Organic Coatings Science and Technology 384 406 1977
- Schofield, M. J. et al., Eighth Int. Congr. Met. Corros 1047 1054 1981
- Bolger, J. C. Treatise on Adhesion and Adhesives 3 Patrick R. L. Marcel Dekker, New York 1973
- Kinloch, A. J. J. Adhesion 10 193 1979
- Williams, J. W. University of Cincinnati, PhD Thesis 1982
- Fowkes F. M. Mostafa, M. A. Ind. Eng. Chem. Res. Dev 17 3 1978
- Jenson, W. B. The Lewis Acid-Base Concept John Wiley and Sons, New York 1980
- Bolger, J. C. “Acid-Base Interactions Between Oxide Surfaces and Polar Organic Compounds,” presented at the Electrochemical Society Meeting, Minneapolis Minnesota 1981
- Parks, G. A. Chem. Review 65 177 1965
- Tanabe, K. Solid Acids and Bases Academic Press New York 1970
- Joppien, G. R. Makromol. Chem 175 1951 1974
- Fontana B. J. Thomas, J. R. J. Phys. Chem 65 480 1961
- Walling, C. J. Am. Chem. Soc 72 1164 1950
- Allara, D. L. Organic Coatings and Plastics Chemistry 45 731 1979
- Stair, P. C. J. Am. Chem. Soc. 104 15 4044 1982
- Apian F. F. Spearin, E. Y. Colloids and Surfaces 1 361 1980
- Manson, J. G. Siriwardane R. Wightman, J. P. J. Adhesion 11 315 1981
- Boerio F. J. Dillingham, R. G. “Hydrothermal Stability of Titanium/Epoxy Joints,” presented at the International Symposium on Adhesive Joints ACS meeting Kansas City, Missouri 1982