Accession Number : AD1044598

Title :   Non Chromate, ZVOC Coatings for Steel Substrates on Army and Navy Aircraft and Ground Vehicles: Non Chromate Sealers for Zinc Phosphate

Descriptive Note : Technical Report

Corporate Author : Army Research Laboratory Adelphi United States

Personal Author(s) : Kelley,John ; Fowler,Amy ; Nickerson,William

Full Text :

Report Date : 30 Apr 2017

Pagination or Media Count : 56

Abstract : The objective of this demonstration is to determine the viability of non-hexavalent chromium sealers for zinc phosphate as a base for organic coatings. By itself, zinc phosphate does not provide adequate corrosion protection. It is a porous coating that requires a sealer to enhance the corrosion protection and provide a good surface for paint adhesion. The current post treatment for zinc phosphate is a chromic acid rinse with hexavalent chromium, a known carcinogen. A successfuldemonstration of a non-hexavalent chromium sealer will reduce and eventually eliminate the use of hexavalent chromium in phosphating processes resulting in reducing health and environmental risks associated with hexavalent chromium.

Descriptors :   coatings , cracking (fracturing) , CARBON STEELS , Chromium , substrates , ground vehicles , military aircraft , corrosion protection , adhesion , field tests , demonstrations , COST ANALYSIS

Subject Categories : Adhesives, Seals and Binders

Distribution Statement : APPROVED FOR PUBLIC RELEASE