Method and Apparatus for Measuring Corrosion Beneath Thin Films
Abstract
A method and an apparatus are provided which can quantitatively measure the corrosion-inhibiting ability of thin films of materials such as lubricants. A galvanic cell is created on a sensitive surface using alternating layers of anodic and cathodic materials such as steel and copper, which are electrically isolated by an insulation matrix. The surface is then cooled to below the dew point of the surrounding environment to cause condensation on the thin film. The galvanic current between the anodic and cathodic materials is then monitored for the first indication of environmental penetration through the film, i.e., corrosion.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 19, 1991
- Accession Number
- ADA391801
Entities
People
- Paul J. Kennedy
- Vinod S. Agarwala
Organizations
- United States Department of the Navy