Patent ID: 11948779
Assignee: KYOCERA CORPORATION
Field: Surface technology, coating (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 0:
1. A component for a plasma processing apparatus, comprising:
a substrate containing a first element, the first element being a metal element or a semimetal element;
a film located on the substrate, the film containing yttrium oxide as a main constituent,
wherein the film contains yttrium oxide crystal grains oriented with a deviation angle of ±10° from a {111} direction of a crystal lattice plane of yttrium oxide, and the yttrium oxide crystal grains oriented with the deviation angle of ±10° have an area ratio of 45% or greater; and
an amorphous section between the substrate and film, the amorphous section containing the first element, yttrium, and oxygen, wherein in the amorphous section, yttrium has the highest mass ratio.