ION ASSISTED DEPOSITION TOP COAT OF RARE-EARTH OXIDE
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Sep 27, 2017
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Apr 25, 2014
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A chamber component comprises a body, a first protective layer and a conformal second protective layer over the first protective layer. The first protective layer comprises a plasma resistant ceramic, has a thickness of greater than approximately 50 microns and comprises a plurality of cracks and pores. The conformal second protective layer comprises a plasma resistant rare earth oxide, has a thickness of less than 50 microns, has a porosity of less than 1%, and seals the plurality of cracks and pores of the first protective layer.
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