Patent ID: 7780786
Filing Date: 2010-08-24
Classification: C23C,H01J,H05H,Y10T

Abstract:
1. An internal member of a plasma processing vessel, comprising: a base material comprising at least one of stainless steel, Al, Al alloy, W, W alloy, Ti, Ti alloy, Mo, Mo alloy, carbon, oxide or non-oxide based sintered ceramic body, and carbonaceous material, the base material being an object on which a film is to be constructed; and a film formed on a surface of the base material, wherein the film has a main layer formed by thermal spraying of ceramic and a barrier coat layer formed of ceramic including an element selected from the group consisting of B, Mg, A1, Si, Ca, Cr, Y, Zr, Ta, Ce and Nd, wherein the barrier coat layer is an intermediate layer formed between the main layer and the base material, and wherein the barrier coat layer is a thermally sprayed film and at least parts of pores inside the barrier coat layer are sealed by a resin provided at a lower portion of the barrier coat layer including a surface contacted with the base material and not including a surface contacted with the main layer; wherein the main layer and the barrier coat layers are separate layers.