RoHS Compliant Chromium-Free Conversion Coating for Aerospace Manufacturing

Document Number: 2006-01-3130

Date Published: September 2006

Author(s):
John Walter Bibber - SanchemInc.

Abstract:
This paper presents, chemistry, test data and processing procedures on a nontoxic and environmentally friendly chrome-free conversion coating alternative with the same level of adhesion and secondary corrosion resistance as that found in chrome containing conversion coating systems. Test data from military and independent sources will be presented on secondary coating adhesion, electrical conductivity, filiform and neutral salt-spray corrosion resistance as compared to chromate-based systems on magnesium, aluminum and zinc and their respective alloys.

The European "RoSH" initiative will not allow for the presence of any hexavalent chromium on imported electrical components as of July first of 2006. Trivalent chromium-based systems generate hexavalent chromium due to the oxidation of the trivalent chromium and as such will not be allowed.

File Size: 179K
Product Status: In Stock

See other papers presented at Aerospace Manufacturing and Automated Fastening Conference and Exhibition, September 2006, Toulouse, FRANC, Session: Materials Properties, Processes and Innovations

Purchase more technical papers and save! With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay. Learn more >