Air Force Successes and Challenges in Cr(VI) Elimination

Abstract

Hexavalent Chromium (Cr(VI)) is an excellent corrosion inhibitor and is highly toxic. National and International regulations and procedures are tightening on Cr(VI) use. DoD is promoting the use of Cr(VI) substitutes. AFRL has a multi-faceted program to eliminate the use of Cr(VI). AFRL Successes Include: Dichromate Sealers -- ready to submit recommendations for TO modifications and transition selected alternative sealer to OC-ALC; An Mg-rich Primer Coating System that is ready for Implementation; and NonLine of Sight (NLOS) Alternatives -- Demonstration of Successful Candidates. AFRL Current Challenges: Conversion Coatings -- There is no magic solution, AF direction is to eliminate Cr completely, no Cr(III); AFRL programs with OO- and OC-ALCs just initiated. AFRL is well poised to meet the future requirements to eliminate Cr(VI).

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Document Details

Document Type
Technical Report
Publication Date
May 10, 2011
Accession Number
ADA565698

Entities

People

  • Elizabeth Berman

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Aircraft Equipment
  • Aircrafts
  • Alloys
  • Aluminum Alloys
  • Chromium
  • Coatings
  • Corrosion
  • Elimination
  • Energy Security
  • Environmental Protection
  • Hydrogen Embrittlement
  • Materials
  • Performance Tests
  • Test And Evaluation
  • Weapon Systems

Readers

  • Materials Science and Engineering.
  • Research Science/Academic Research
  • Surface Coatings Technology.