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

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.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 30, 2017
Accession Number
AD1044598

Entities

People

  • Amy Fowler
  • John Kelley
  • William Nickerson

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Biomedical
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Abrasive Blasting
  • Chemical Synthesis
  • Chemistry
  • Contracts
  • Corrosion
  • Department Of Defense
  • Environment
  • Failure Mode And Effect Analysis
  • Finishes
  • Materials
  • Organic Coatings
  • Substrates
  • Surface Finishing
  • Surface Properties
  • Test And Evaluation
  • Test Equipment
  • Test Methods

Readers

  • Surface Engineering/Surface Coating Technology.