Process and solution for providing a conversion coating on a...

Details Process and solution for providing a conversion coating on a... Process and solution for providing a conversion coating on a...

C - Chemistry, Metallurgy

23

C

C23C 22/48 (2006.01) C23C 22/53 (2006.01) C23C 22/56 (2006.01) C23C 22/57 (2006.01)

Patent

CA 2373996

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.

L'invention concerne une solution acide aqueuse pour la formation d'un revêtement par conversion contenant un élément du groupe des terres rares. Ladite solution est exempte de chromate et comprend des quantités efficaces d'au moins une espèce contenant un élément du groupe des terres rares (défini dans le dossier), un oxydant et au moins un accélérateur, comprenant un métal choisi dans les Groupes VA et VIA du tableau périodique.

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