Patent ID: 8282987

Claim:
A method of making an aluminum-plated component of a semiconductor material processing apparatus, comprising: optionally forming an intermediate layer on at least a first surface of a substrate, the intermediate layer including at least a second surface; electrodepositing a high-purity, aluminum plating on the first surface of the substrate or on the second surface of the optional intermediate layer, wherein the first surface of the substrate or the second surface of the intermediate layer on which the aluminum plating is formed is an electrically-conductive surface, the aluminum plating comprising an outer surface of the component; and optionally forming an anodized layer on the aluminum plating, the anodized layer covering the outer surface of the aluminum plating and comprising a process-exposed outer surface of the component; wherein: the substrate comprises aluminum or an aluminum alloy and the aluminum plating is an electrodeposited layer comprising, in wt. %, at least 99.00% Al, ≦0.10% Cu, ≦0.10% Mg, ≦0.015% Mn, ≦0.02% Cr, ≦0.07% Fe, ≦0.025% Zn, ≦0.06% Si, ≦0.015% Ti, and ≦0.015% total residual elements; the aluminum plating has a thickness of at least about twice the thickness of the anodized layer; and the anodized layer is formed on the aluminum plating using a mixed acid bath containing oxalic and sulfuric acid.