PROCESS CHAMBER PROCESS KIT WITH PROTECTIVE COATING

    公开(公告)号:WO2019240915A1

    公开(公告)日:2019-12-19

    申请号:PCT/US2019/033259

    申请日:2019-05-21

    Abstract: Embodiments described herein generally relate to a method and apparatus for fabricating a chamber component for a plasma process chamber. In one embodiment a chamber component used within a plasma processing chamber is provided that includes a metallic base material comprising a roughened non-planar first surface, wherein the roughened non-planar surface has an Ra surface roughness of between 4 micro-inches and 80 micro-inches, a planar silica coating formed over the roughened non-planar surface, wherein the planar silica coating has a surface that has an Ra surface roughness that is less than the Ra surface roughness of the roughened non-planar surface, a thickness between about 0.2 microns and about 10 microns, less than 1% porosity by volume, and contains less than 2E 12 atoms/centimeters 2 of aluminum.

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