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00276 READINESS OF TRIVALENT CHROMIUM CONVERSION COATINGS FOR ALUMINUM ALLOYS

Product Number: 51300-00276-SG
ISBN: 00276 2000 CP
Author: Vinod S. Agarwala, Fred Pearlstein, M. Todd Coolbaugh, Michael D. Harig and Howard P. Groger
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$20.00
$20.00
A field usable trivalent chromium conversion coating process for aluminum alloys was developed. A concentrate formulation was developed that can be mixed in the field and is ready for immediate use. The conversion coatings impart excellent paint adhesion and corrosion protection to A12024-T3 and AI7075-T6. Surface analysis reveals the conversion coating to consist of a mixture zirconium and chromium oxide species. Toxicological testing has confirmed that the trivalent conversion coating materials are much more benign than chromate (hexavalent chromium) conversion coating materials. Keywords: trivalent chromium, conversion coating, aluminum alloy pretreatment, aircraft materials, corrosion resistance, paint adhesion
A field usable trivalent chromium conversion coating process for aluminum alloys was developed. A concentrate formulation was developed that can be mixed in the field and is ready for immediate use. The conversion coatings impart excellent paint adhesion and corrosion protection to A12024-T3 and AI7075-T6. Surface analysis reveals the conversion coating to consist of a mixture zirconium and chromium oxide species. Toxicological testing has confirmed that the trivalent conversion coating materials are much more benign than chromate (hexavalent chromium) conversion coating materials. Keywords: trivalent chromium, conversion coating, aluminum alloy pretreatment, aircraft materials, corrosion resistance, paint adhesion
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