Patent ID: 8545639
Filing Date: 2013-10-01
Classification: C11D,H01J

Abstract:
1. A method of cleaning an aluminum or anodized aluminum surface of a component of a plasma chamber in which semiconductor substrates are processed, the method comprising: soaking the surface in a diluted sulfuric peroxide (DSP) solution; spray rinsing the surface with water following removal of the surface from the DSP solution; soaking the surface in a dilute nitric acid (HNO3) solution having a concentration of approximately 2 to 5 wt % HNO3 and a balance water; spray rinsing the surface with water following removal of the surface from the nitric acid solution; and repeating at least twice the steps of soaking the surface in dilute nitric acid and spray rinsing the surface with water following removal of the surface from the DSP solution.