Groove Adhesion Test for Electrodeposited Chromium.
Abstract
A quantitative test has been devised to evaluate the adhesion of electro-deposited chromium on steel substrates. The test involves the cutting of parallel grooves across a plated surface using a small metal shaper equipped with a carbide tool. The grooves are cut at a depth just below the interface and shearing stresses are generated which can produce failure of the coating. In general, varying amounts of residual chromium are left on the surface of the lands depending on the relative cohesive and adhesive bond strengths of the electrodeposited chromium. Energy dispersive x-ray analysis is used to map the distribution of residual chromium and obtain an intensity count. The ratio of intensity count normalized against a reference of 100 percent chromium coverage provides a quantitative measurement of adhesion. The groove adhesion test was found to be equally applicable of both hard chromium and soft chromium deposits.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1987
- Accession Number
- ADA177828
Entities
People
- E. S. Chen
- S. K. Pan
Organizations
- United States Army Armament Research, Development and Engineering Center