Patent ID: 8585844
Filing Date: 2013-11-19
Classification: H01J,Y10T

Abstract:
1. A method of installing a component of a plasma processing chamber comprising removing a component from within the chamber and replacing it with a component made by a. forming a dual-layer green body by wherein the first layer consists essentially of alumina particles and a polymeric binder and the second layer consists essentially of yttria particles and a polymeric binder; and b. co-sintering the dual-layer green body, wherein the first layer and the second layer are in intimate contact during the sintering process; so as to form a three-layer component, comprising an outer layer of alumina adjacent an intermediate layer comprising a solid solution of yttria and alumina, adjacent a second outer layer of yttria, wherein the component is installed such that when the chamber is in operation so as to create a plasma environment, the second outer layer of yttria has at least one surface exposed to the plasma environment.