Validation/Demonstration of Anti-Corrosion Inhibitor Primer Formulations as Replacements for Hexavalent Chromium Military Primer Coatings

WP-200904

Objective

The Department of Defense (DoD) relies heavily on hexavalent chromium (Cr[VI]) as a corrosion-inhibiting additive and adhesion promoter in military primer formulations that are currently found on aluminum and steel alloys. Incorporating a corrosion-inhibiting compound such as derivatives of 2,5-dimercapto-1,3,4-thiadiazole (DMcT), which have been shown to mimic the corrosion-inhibiting properties of Cr(VI), will provide DoD an attractive Cr(VI)-free alternative. The objective of this project is to demonstrate a new primer formulation that can be incorporated into either a Cr(VI)-free epoxy or a conductive polymer (CP) formulation.

Back to Top

Technology Description

This new primer formulation developed by Crosslink in cooperation with the Naval Air Systems Command (NAVAIR) can be incorporated into either a Cr(VI)-free epoxy or in a CP formulation. The Navy, Air Force, and Army will test both formulations, along with Cr(VI) controls, for performance. Each Service will test the Crosslink Cr(VI)-free primer formulations on substrates using full military coatings under controlled laboratory conditions. The best performing military coating will be down selected and field tested on noncritical military equipment.

Back to Top

Benefits

A completely Cr(VI)-free military coating will result in a significant reduction in the costs of disposing of hazardous Cr(VI) waste, improved worker safety, compliance with existing and future environmental regulations, and military equipment sustainability in support of mission readiness. (Anticipated Project Completion - 2013)

Back to Top

Points of Contact

Principal Investigator

Dr. Peter Zarras

Naval Air Systems Command (NAVAIR)

Phone: 760-939-1396

Fax: 760-939-1617

Program Manager

Weapons Systems and Platforms

SERDP and ESTCP

Document Types

  • Fact Sheet - Brief project summary with links to related documents and points of contact.
  • Final Report - Comprehensive report for every completed SERDP and ESTCP project that contains all technical results.
  • Cost & Performance Report - Overview of ESTCP demonstration activities, results, and conclusions, standardized to facilitate implementation decisions.
  • Technical Report - Additional interim reports, laboratory reports, demonstration reports, and technology survey reports.
  • Guidance - Instructional information on technical topics such as protocols and user’s guides.
  • Workshop Report - Summary of workshop discussion and findings.
  • Multimedia - On demand videos, animations, and webcasts highlighting featured initiatives or technologies.
  • Model/Software - Computer programs and applications available for download.
  • Database - Digitally organized collection of data available to search and access.