The Abrasion Characteristics of Certain Protective Coatings on Aluminum and Magnesium Alloys
Abstract
The abrasion resistances of two finishing systems, one applied to 2014 aluminum and the other to ZK60A magnesium, were evaluated. Both alloys were first anodized. Subsequently, a blue-wash primer and semigloss paint were applied to the 2014 aluminum; the ZK60A magnesium received a polyamide primer and a polyurethane topcoat. The tests, performed to compare the relative abrasion resistances of the two systems, were carried out using the Taber Abraser Model 503. Abrasion rates were measured by a weight-loss technique. Analysis of the data indicated that, under the test conditions applied, the topcoats contributed little to the overall abrasion resistance of the two coating systems; rather, the anodic layer of each appeared to be the most important parameter. Further, the rate of abrasion of the anodic layer was relatively constant in each case and could be approximated by a straight line relationship. The anodic film on the 2014 aluminum demonstrated significantly better resistance to abrasion than that on the ZK60A magnesium. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1977
- Accession Number
- ADA039848
Entities
People
- Alan Campbell
- P. Thornton
- W. Mortimer
Organizations
- United States Army Armament Research, Development and Engineering Center