Process and solution for providing a conversion coating on a metallic surface I
AssigneeCommonwealth Scientific and Industrial Research Organisation
InventorsSimon Gerard Hardin, Klaus Werner Wittel, Anthony Ewart Hughes, Karen Joy Hammon Nelson
Life of this patent
Estimating the term…
Abstract
An aqueous acidic solution for forming a rare earth element containing conversion coating on the surface of a metal, said solution being chromate-free and including effective quantities of at least one rare earth element (as herein defined) containing species, an oxidant and at least one accelerator, comprising a metal selected from Groups VA and VIA of the Periodic Table.
Claims23
An aqueous acidic solution for forming a rare earth element containing conversion coating on the surface of a metal, said solution being substantially chromate-free and including at least one rare earth element containing species, an oxidant and at least one accelerator comprising a metal selected from Groups VA and VIA of the Periodic Table, wherein said rare earth element containing species, oxidant and accelerator are present in quantities effective to form said conversion coating.
Dependencies are inferred from the claim text.