Abstract
This project evaluated the corrosion damage over a five-year period of organic coated steels in automotive chassis parts during P/G and field tests using electrochemical impedance spectroscopy (EIS) in a 3.5 wt.% NaCl solution. EIS can provide both quantitative kinetic and mechanistic information about the performance of organic coating/metal systems. The difference in coating performance between the P/G and field test specimens was assessed in relation to the impedance parameters. In particular, it was found that the coating resistance and charge transfer resistance could be used to estimate the difference in corrosion damage between the P/G and field test specimens. The coating performance of the P/G and field test specimens was visually evaluated using SEM. The mechanism of corrosion occurring in the P/G test was similar to that taking place in the field test. The field test environment was about ten times as corrosive as the P/G environment in terms of the electrochemical impedance parameters and surface analysis.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Chen, M., Yu, Q. S., Reddy, C. M. and Yasuda, H. K. (2000). Model study investigating the role of interfacial factors in electrochemical impedance spectroscopy measurements. Corrosion, 56, 709–721.
Davidson, D., Thompson, L., Lutze, F., Tiburcio, B., Smith, K., Meade, C., Mackie, T. (2003). Perforation corrosion performance of autobody steel sheet in on-vehicle and accelerated tests. SAE Paper No. 2003-01-1238.
Deflorian, F., Fedrizzi, L., Rossi, S., Buratti, F. and Bonora, P. L. (2000). Electrochemical characterisation of organic coatings for the automotive industry. Progress in Organic Coating, 39, 9–13.
Deflorian, F., Fedrizzi, L. and Rossi, S. (1998). Electrochemical impedance spectroscopy and fourier transform infrared spectroscopy of natural and accelerated weathering of organic coatings. Corrosion, 54, 598–605.
Dehri, I. and Erbil, M. (2000). The effect of relative humidity on the atmospheric corrosion of defective organic coating materials: An EIS study with a new approach. Corr. Sci., 42, 969–978.
Garrett, R., Datta, V. and Robert, P. (2003). Electrochemical impedance spectroscopy: Testing coatings for rapid immersion service. Materials Performance, 42, 36–41.
Moriyasu, M. (1980). Handbook of Painting. Sehwa. Seoul. Korea.
Park, K. D., Ki, W. T., Shin, Y. J. and Ryu, H. J. (2007). Effect of compressive residual stress for corrosion property of sup-9 steel using as suspension material. Int. J. Automotive Technology 8,3, 343–676.
Schmitz, B., Defourny, J. and Leroy, V. (1993). A cyclic model of cosmetic corrosion for painted steel sheets. SAE Paper No. 930750.
Scully, J. R. and Hensley, S. T. (1994). Lifetime prediction for organic coatings on steel and a magnesium alloy using electrochemical impedance methods. Corrosion, 50, 705–716.
Suay, J. J., T. Rodriguez, M., Razzaq, K. A., Carpio, J. J., and Saura, J. J. (2003). The evaluation of anticorrosive automotive epoxy coatings by means of electrochemical impedance spectroscopy. Progress in Organic Coating, 46, 121–129.
Tsai, C. H. and Mansfeld, F. (1993). Determination of coating deterioration with EIS: Part II. Development of a method for field testing of protective coatings. Corrosion, 49, 726–737.
Wang, T., Gao, G., Bomback, J. and Ricketts, M. (2001). A vehicle micro corrosion environmental study of field and proving ground tests. SAE Paper No. 2001-01-0646.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Choi, Y.S., Kim, J.G., Kim, Y.S. et al. Corrosion characteristics of coated automotive parts subjected to field and proving ground tests. Int.J Automot. Technol. 9, 625–631 (2008). https://doi.org/10.1007/s12239-008-0074-x
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12239-008-0074-x