Inventors:
James M. Marinelli - Murrysville PA
Sherri F. McCleary - Apollo PA
John V. Costrini - Apollo PA
Gary A. Nitowski - Lower Burrell PA
John T. Siemon - Cheswick PA
Assignee:
Aluminum Company of America - Pittsburgh PA
International Classification:
B21D 3500
Abstract:
An aluminum alloy sheet, plate, casting or extrusion having a surface layer containing magnesium oxide and aluminum oxide is cleaned with an acidic solution. The cleaned component has an aluminum oxide layer that is pretreated with a phosphorus-containing organic acid to form a functionalized layer. A layer of polymeric adhesive is applied to the functionalized layer, and the adhesive layer is joined to a metal support structure to form a vehicle assembly.