Accession Number : ADA331035

Title :   An Innovative DC Polarization Method for Evaluating Coatings.

Descriptive Note : Conference proceedings,

Corporate Author : NAVAL AIR WARFARE CENTER AIRCRAFT DIV WARMINSTER PA

Personal Author(s) : Fabiszewski, Alan S. ; Agarwala, Vinoid S.

PDF Url : ADA331035

Report Date : 23 JUN 1994

Pagination or Media Count : 15

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.

Descriptors :   *SYMPOSIA, *CORROSION INHIBITION, *ELECTROCHEMISTRY, *PROTECTIVE COATINGS, POLARIZATION, INTERFACES, ALUMINUM, DIRECT CURRENT.

Subject Categories : Physical Chemistry
      Coatings, Colorants and Finishes
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE