The National Shipbuilding Research Program. 1997 Ship Production Symposium, Paper Number 8: Environmentally Acceptable Corrosion Resistant Coating for Aluminum Alloys
Abstract
A coating system is described that is based on passivation of aluminum alloys by application of Lithium salts as pigments. The resulting composition and morphology of coating films are discussed. Pigment selection applying Greco-Latin Squares statistical method to evaluate corrosion as a function of current flow on 6061-T6 test surfaces was performed. The test device is a potentiostat made by Princeton Applied Research. The pigment is an Aluminum-Lithium powder which has been surface enriched with Lithium by heating under an argon blanket and subsequently treated with the selected anions. The author calls this process "nanostructural inhibitors." The vehicle in this case is a lithium silicate inorganic water soluble matrix which becomes water insoluble upon drying. The vehicle is commercially available. Testing by an independent laboratory to ASTM B117 for 168 hours of scribed panels showed no corrosion on various alloy substrates with and without topcoats.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1997
- Accession Number
- ADA452158
Entities
People
- A. F. Daech
Organizations
- University of New Orleans