Nonchromate
Primer for
Aircraft Exteriors
(Boeing Military Aircraft and Missile Systems Group)
Project Number: J-95-OC-002
Technology Survey
At The Boeing Company, formerly BISDS, JG-PP project site in St. Louis, Missouri, chromium in primer coatings was identified as a HazMat of concern and was targeted for elimination or reduction. Chromate primers are used to increase corrosion resistance and improve paint adhesion. Aluminum alloys are most common on aircraft exterior surfaces, but other substrates such as steel, composites, and titanium are also present and will be coated by these primers. As documented in this Technology Survey, commercially available or near commercially available nonchromate primers alternatives, including conventional coating, high-solids coatings, and waterborne coatings, having potential to replace chromate primer coatings, were identified through literature searches, electronic database searches, Internet searches, customized surveys, and/or personal and professional contacts. This report contains a description of the search strategy used to identify the alternative materials and technologies and a brief description of each identified alternative, and bibliographic citations of the relevant articles that were identified during literature searches.To view the Technology Survey for Alternatives to Chromate-Containing Primers for Aircraft Exterior Mold Line Skins, dated May 1, 1998, please click here. This document is now Appendix B of the PAR.
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