C - Chemistry – Metallurgy – 23 – C
Patent
C - Chemistry, Metallurgy
23
C
C23C 22/06 (2006.01) C23C 22/40 (2006.01) C23C 22/56 (2006.01)
Patent
CA 2204897
A process and an aqueous, acidic solution for forming a rare earth element containing coating on the surface of a metal, said solution including effective quantities of: (a) one or more rare earth element containing species including at least one rare earth element capable of having more than one higher valence state, as herein defined; and (b) one or more additives selected from the groups including: i) aqueous metal complexes including at least one peroxo ligand; and ii) metal salts or aqueous metal complexes of a conjugate base of an acid in which the metals are selected from Transition Elements and Group IVA elements of the Periodic Table as herein defined.
Procédé et solution acide aqueuse permettant de former une couche contenant un élément des terres rares sur la surface d'un métal. Cette solution contient des quantités efficaces de: (a) une ou plusieurs espèces contenant au moins un élément des terres rares capable de présenter plus d'un état de valence supérieur, conformément à la description; et (b) un ou plusieurs additifs choisis dans les groupes comprenant (i) des complexes métalliques aqueux contenant au moins un ligand peroxo; et (ii) des sels métalliques ou complexes métalliques aqueux d'une base conjuguée d'un acide, les métaux étant choisis parmi les éléments de transition et les éléments du Groupe IVA de la Table Périodique, conformément à la description.
Hughes Anthony Ewart
Nelson Karen Joy Hammon
Turney Terence William
Commonwealth Scientific And Industrial Research Organisation
Sim & Mcburney
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