SEALED ANODIC COATINGS
First Claim
1. A sealed anodized metal comprising:
- a metallic substrate comprising a first metal;
an anodic region contiguous with at least a portion of the metallic substrate, the anodic region having a plurality of cells comprising an amorphous first metal oxide, each of the plurality of cells having a pore with a pore filler in at least a portion thereof, the pore filler comprising at least one of a crystalline transition metal oxide, a crystalline precious metal oxide, a metalloid oxide, an alkali earth metal oxide, and an alkali metal oxide; and
a seal region adjacent to at least a portion of the anodic region, the seal region comprising at least one of a crystalline first metal oxide, a crystalline precious metal oxide, a crystalline alkali metal oxide, a crystalline first metal hydroxide, a crystalline precious metal hydroxide, and a crystalline alkali metal hydroxide.
5 Assignments
0 Petitions
Accused Products
Abstract
Metal and metal alloys with sealed anodic oxide coatings with at least partial crystallinity are disclosed. Associated articles are correspondingly disclosed. The sealed anodic coatings exhibit steam, superheated steam, alkaline and acidic resistance. The crystalline sealed anodic oxide coating can be prepared by impregnation of pores of a metal or metal substrate with metal precursor species, conversion of the metal precursor species into metal hydroxides, thermal treatment to dry out moisture and to promote phase transformation of the metal hydroxide product into metal oxides solids and bonding with metastable metal oxide substance in the pore structure of the metal or metal alloy substrate, and hydrothermal sealing, to create sealed anodic coating.
25 Citations
15 Claims
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1. A sealed anodized metal comprising:
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a metallic substrate comprising a first metal; an anodic region contiguous with at least a portion of the metallic substrate, the anodic region having a plurality of cells comprising an amorphous first metal oxide, each of the plurality of cells having a pore with a pore filler in at least a portion thereof, the pore filler comprising at least one of a crystalline transition metal oxide, a crystalline precious metal oxide, a metalloid oxide, an alkali earth metal oxide, and an alkali metal oxide; and a seal region adjacent to at least a portion of the anodic region, the seal region comprising at least one of a crystalline first metal oxide, a crystalline precious metal oxide, a crystalline alkali metal oxide, a crystalline first metal hydroxide, a crystalline precious metal hydroxide, and a crystalline alkali metal hydroxide. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A metallic utensil comprising:
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a bulk metallic portion comprising a first metal; and a sealed anodized coating on at least a portion of the bulk metallic portion, the sealed anodic coating having a first region adjacent the bulk metallic portion, a second region, and an interfacial region between and contiguous with the first region and the second region, the first region including a plurality of cell structures comprising a first metal oxide, each of the cell structures having a pore that at least partially contains a filler comprising at least one of crystalline transition metal oxide, crystalline precious metal oxide, metalloid oxide, alkali earth metal oxide, and alkali metal oxide, the second region comprising at least one of crystalline first metal oxide, crystalline precious metal oxide, crystalline alkali metal oxide, crystalline first metal hydroxide, crystalline precious metal hydroxide, and crystalline alkali metal hydroxide, and the interfacial region comprising at least one of at least one of crystalline transition metal hydroxide, crystalline precious metal hydroxide, and crystalline alkali metal hydroxide. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification