The Relative Effect of Paint Film Thickness on Bimetallic and Crevice Corrosion 860109
The proliferation of Unibody construction, for vehicle weight reduction, and the expanded use of precoated steel, for improvement in outer body rust-through protection, has significantly increased the number of bimetallic and crevice unions on U.S. manufactured vehicles. Cyclic corrosion and proving ground testing has shown that these unions are highly active electrochemically, resulting in extensive anodic corrosion and cathodic de-lamination of the paint film. This work examines the individual contribution of each layer of the applied protective coatings package, with respect to applied film thickness, to the reduction of permeation by water, oxygen, and NaCl and resultant corrosion.
Citation: Vincent, J. and Coon, C., "The Relative Effect of Paint Film Thickness on Bimetallic and Crevice Corrosion," SAE Technical Paper 860109, 1986, https://doi.org/10.4271/860109. Download Citation
Author(s):
J. J. Vincent, C. L. Coon
Affiliated:
Ford Motor Company
Pages: 20
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Corrosion--Coatings and Steels-SP-0649, SAE Transactions 1986-V95-86
Related Topics:
Corrosion
Test facilities
Coatings, colorants, and finishes
Oxygen
Steel
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