C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/56 (2006.01) C23C 22/06 (2006.01) C23C 22/48 (2006.01) C23C 22/53 (2006.01) C23C 22/83 (2006.01)
Patent
CA 2192449
A process for forming a conversion coating on the surface of a metal, including: contacting the metal with an acidic solution containing an oxidant in order to initiate growth of a metal oxide cell structure on the metal surface; contacting the metal with water for a period of time sufficient to thicken the oxide and form a metal oxide containing layer of a desired thickness; and treating the metal with one or more rare earth elements in order to impregnate and substantially seal the metal oxide.
Procédé de formation d'une couche de conversion sur la surface d'un métal qui consiste à mettre le métal en contact avec une solution acide contenant un oxydant de manière à amorcer la croissance de la structure cellulaire d'oxyde de métal sur la surface métallique; à mettre le métal en contact avec de l'eau pendant suffisamment de temps pour que l'oxyde s'épaississe et qu'une couche contenant de l'oxyde de métal de l'épaisseur désirée soit formée; et à traiter le métal avec un ou plusieurs métaux des terres rares de sorte que l'oxyde de métal s'imprègne et soit entièrement recouvert.
Henderson Mark Julian
Hinton Bruce Roy William
Hughes Anthony Ewart
Nelson Karen Joy Hammon
Nugent Sally Ann
Commonwealth Scientific And Industrial Research Organisation
Sim & Mcburney
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