Extending lifetime of yttrium oxide as a plasma chamber material

摘要

A method of installing a component of a plasma processing chamber by replacing a used component with a component made by forming a dual-layer green body and co-sintering the dual-layer green body so as to form a three-layer component. The three layer component comprises an outer layer of yttria, an intermediate layer of YAG, and a second outer layer of alumina. The component is installed such that the outer layer of yttria is exposed to the plasma environment when the chamber is in operation.