COMPONENTS OF PLASMA PROCESSING CHAMBERS HAVING TEXTURED PLASMA RESISTANT COATINGS

COMPONENTS OF PLASMA PROCESSING CHAMBERS HAVING TEXTURED PLASMA RESISTANT COATINGSA component of a plasma processing chamber includes a three dimensional body having a highly dense plasma resistant coating thereon wherein a plasma exposed surface of the coating has a texture which inhibits particle generation from film buildup on the plasma exposed surface. The component can be a window of an inductively coupled plasma reactor wherein the window includes a textured yttria coating. The texture can be provided by contacting the plasma exposed surface with a polishing pad having a grit size effective to provide intersecting scratches with a depth of 1 to 2 microns.FIG. 1