Treated Aluminum article and method for making same
First Claim
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1. An article, comprising:
- a substrate having a surface comprising aluminum or an aluminum alloy;
a sealed anodic coating layer overlying at least part of the surface of the substrate; and
a layer of a silicon-containing polymer overlying the sealed anodic coating layer.
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Abstract
The disclosed invention relates to an article, comprising: a substrate having a surface comprising aluminum or an aluminum alloy; a sealed anodic coating layer overlying at least part of the surface of the substrate; and a layer of a silicon-containing polymer overlying the sealed anodic coating layer. The article may be useful as a brake or wheel component.
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Citations
27 Claims
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1. An article, comprising:
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a substrate having a surface comprising aluminum or an aluminum alloy;
a sealed anodic coating layer overlying at least part of the surface of the substrate; and
a layer of a silicon-containing polymer overlying the sealed anodic coating layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method of treating a substrate having a surface comprising aluminum or an aluminum alloy, the method comprising:
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forming an anodic coating layer overlying at least part of the surface of the substrate;
sealing the anodic coating layer to form a sealed anodic coating layer; and
forming a silicon-containing polymer layer overlying the sealed anodic coating layer.
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27. A method of treating a substrate, the substrate having a surface comprising an aluminum alloy, the process comprising:
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forming an anodic coating layer overlying at least part of the surface of the substrate, the anodic coating layer being formed using a sulfuric acid bath;
sealing the anodic coating layer using water and/or a sealing solution to form a sealed anodic coating layer, the sealing solution comprising water and one or more of sodium dichromate, potassium dichromate, nickel acetate or cobalt acetate; and
forming a silicon-containing polymer layer over the sealed anodic coating layer, the silicon containing polymer being derived from at least one alkoxysilane, at least one inorganic siloxane, or a mixture thereof.
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Specification