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2067088 
Technical Report 
XANES investigation of cerium as an inhibitor for Al alloys 
Davenport, AJ; Isaacs, HS; Kendig, MW 
1991 
NTIS/02974469_a 
GRA and I 
GRA and I 
Cerium ions are under investigation as possible replacements for toxic chromates. The use of cerium ions as corrosion inhibitors for aluminum alloys is investigated using XANES (x-ray absorption near edge structure). On immersion in a dilute solution of cerium ions, cerium is incorporated into the oxide films on aluminum alloys in either the 3- or 4-valent state depending upon the alloy and on the surface preparation. 7 refs., 2 figs.