Abstract
A method to facilitate electrochemical coatings from a non-aqueous, poorly conductive (and therefore normally difficult to work with) electrolyte is presented. The process involves loading the electrolyte with pretreated ion-exchange beads to provide multiple low-resistivity paths for ionic but not electronic conduction between a counter-electrode and workpiece. Using the formation of iron phosphate conversion coatings from an oil-based lubricant as a test case, the effects of bead moisture content and oil additive concentration on the coating process are described. With this new approach electrochemical coating is possible, even in poorly conductive fluids, over a far larger range of electrode separations than could otherwise be accomplished.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S. S. Wang and S. C. Tung, in Fall Meeting of the Electrochemical Society, Las Vegas, Extend Abstract No. 431, (1985).
F. L. Synder, J. L. Tevaarwerk and J. A. Schey,SAE Paper No. 840263 (1984).
H. Okabe and S. Ida,ASLE Trans. 20 (1977) 126.
F. G. Rounds, Presented at the ASLE/ASME Lubrication Conference, Pittsburgh, 16–18 October 1962, ASLE Reprint No. 62 LC-16.
S. S. Wang and S. C. Tung, US Patent 4 714 529 (1987).
R. P. Tison,Plating Surf. Finish. 75 (1988) 114.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Tison, R.P., Synder, D.D. & Wang, S.C.S. A novel, two-phase medium for electrochemically induced conversion coatings. J Appl Electrochem 20, 457–462 (1990). https://doi.org/10.1007/BF01076056
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01076056