The cathodic disbondment of a fusion-bonded epoxy coating applied to mild steel treated with a phosphoric acid wash has been investigated. The interfacial chemistry of disbondment has been studied by X-ray photoelectron spectrscopy (XPS), which shows the locus of failure to alternate between cohesive failure of the polymer coating and a phosphate-bearing layer. The kinetics of delamination are substantially reduced compared with data obtained for epoxy applied to a bare steel substrate. It is concluded that the application of an acid wash treatment results in a stronger, more durable, polymer-to-substrate bond. The process parameters of the wash treatment control both the substrate surface chemistry prior to coating and the eventual failure mode.
This is a preview of subscription content, log in to check access.
Buy single article
Instant access to the full article PDF.
Price includes VAT for USA
Subscribe to journal
Immediate online access to all issues from 2019. Subscription will auto renew annually.
This is the net price. Taxes to be calculated in checkout.
J. F. Watts and J. E. Castle, J. Mater. Sci. 19 (1984) 2259.
D. Gray, W. H. Lunn and O. McArdle, Maters. Perf. 22 (7) (1984) 4.
D. Gray, Private communication (1981).
Mobilox™, “Fusion Bonded Pipe Coatings”, P.P.C. Application Guide, AG-5-1980C (1980) p. 6.
British Gas Corporation, Specification PS/CW6.
G. Lewis, P. G. Fox and P. J. Boden, Corros. Sci. 20 (1980) 331.
T. R. Roberts, J. Kolts and J. H. Steels Jr, SAE Tech. Paper. Series No. 80043 (1980).
J. F. Watts and J. E. Castle, J. Mater. Sci. 18 (1983) 2987.
M. Gettings, F. S. Baker and A. J. Kinloch, J. Appl. Polymer. Sci. 21 (1977) 2375.
About this article
Cite this article
Watts, J.F. The application of X-ray photoelectron spectroscopy to the study of polymer-to-metal adhesion. J Mater Sci 19, 3459–3465 (1984). https://doi.org/10.1007/BF00549839
- Phosphoric Acid
- Failure Mode
- Mild Steel
- Substrate Surface