Patent ID: 6706205
Filing Date: 2004-03-16
Classification: C03C,C23C

Abstract:
A method of preparing a quartz processing article for a semiconductor furnace, comprising mechanically roughening a surface of said article and chemically roughening said surface; wherein said mechanically roughening comprises mechanically blasting said surface, and said chemically roughening comprises chemically etching said surface to provide the quartz processing article characterized by a surface roughness having a first component with an average deviation from a first mean surface of about 5 to 25 microns, and a second component with an average deviation from a second mean surface of about 0.5 to 2.5 microns; said first mean surface being defined over a distance of about 500 microns along said surface, and said second mean surface being defined over a distance of about 50 microns along said surface.