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

Report Date:

2017-04-30

Pagination or Media Count:

56.0

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