Surface preparation for bonding titanium
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsWayne C. Tucker, James C. Butts, Leonard E. Burgmyer, Jr., Raymond A. St. Amand
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Abstract
The present invention relates to a method for preparing a titanium or titum alloy surface and a primer for use in the method. The method broadly comprises the steps of grit blasting portions of the surface to which an adhesive will be applied and thereafter applying an acid wash primer to the surface portions. The acid wash primer preferably consists essentially of 70% by weight isopropyl alcohol, 5% by weight ethyl alcohol, 15% by weight n-butyl alcohol, 5% by weight zinc chromate and 5% by weight phosphoric acid.
Claims14
A method for preparing a titanium or titanium alloy surface comprising the steps of:
- grit blasting desired portions of said surface;
- and
- applying an acid wash primer comprising an alcohol-zinc-chromate-phosphoric acid mixture to said desired portions, said grit blasting and primer applying steps improving the bondability of said titanium or titanium alloy surface, said primer consisting essentially of 90% by weight alcohol solution, 5% by weight zinc chromate and 5% by weight phosphoric acid.
Dependencies are inferred from the claim text.