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US 11,473,201 B2Granted
Treated anodized metal article and method of making
AssigneeHamilton Sundstrand Corporation
InventorsSusanne M. Opalka, Weina Li, Joseph J. Sangiovanni, Mark R. Jaworowski, Georgios S. Zafiris, Weilong Zhang, Zhongfen Ding
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Abstract
A method is disclosed for treating an anodized metal surface. According to the method, polynuclear clusters comprising aluminum oxide hydroxide are applied to the anodized metal surface.
Claims2
A method of surface treating a metal article, comprising:
- anodizing the metal article to form an anodized surface on the metal article;
- and
- applying polynuclear aluminum clusters comprising aluminum oxide hydroxide to the anodized surface, wherein the polynuclear aluminum oxide hydroxide clusters comprise Al13 clusters according to the formula:
- [AlO4Al12(OH)24(H2O)12]7+*[(7/n) X−n]7− where X−n represents ‘−n’ charge-bearing X counter-ion species and (7/n) X−n are needed to neutralize the total complex charge, or Al30 clusters formed by condensation of two of said Al13 clusters bridged with four monomeric aluminum ions.
1 more element
Dependencies are inferred from the claim text.