An Innovative DC Polarization Method for Evaluating Coatings.
Abstract
A new coating evaluation technique based on electrochemical polarization of specimens with scribed defects was developed and evaluated as a method for assessing corrosion protection by coatings on metals. A unique scribe method was developed to create reproducible defects on the specimens in a manner such that the coating/metal interface was consistently exposed. Various organic and inorganic coating systems were examined on aluminum substrates in 3.5% NaCl solution. Electrochemical results were compared to standard coating evaluation techniques. Preliminary results indicate that this technique is useful for comparative evaluation of coating systems, and offers a number of advantages such as fast and quantitative measurements, good reproducibility and sensitivity.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 23, 1994
- Accession Number
- ADA331035
Entities
People
- Alan S. Fabiszewski
- Vinoid S. Agarwala
Organizations
- Naval Air Warfare Center Aircraft Divison