Patent ID: 7732056

Claim:
A method of manufacturing a corrosion-resistant aluminum chamber component having a surface, the method comprising: (a) providing an aluminum chamber component comprising at least a portion of an enclosure wall, liner, substrate support, gas supply, gas energizer, gas exhaust, or substrate transport of a processing chamber; (b) roughening a surface of the aluminum chamber component by bead blasting the surface to a roughness of about 100 to about 200 μm; (c) anodizing the surface of the aluminum chamber component to form an anodized aluminum oxide layer; and (d) sputter coating a sputtered aluminum oxide layer consisting of aluminum oxide in a thickness of from about 2 to about 5 μm, on the anodized aluminum oxide layer, whereby the anodized aluminum oxide layer and the sputtered aluminum oxide layer are capable of protecting the aluminum chamber component from corrosive gases.