Abstract:
An article-is provided that includes a substrate and a corrosion-resistant coating provided on the substrate. The substrate generally consists essentially of alumina, and the corrosion-resistant coating is provided so as to directed contact the substrate without the provision of intervening layers between the substrate and the corrosion-resistant coatin, such as reaction products provided by high-temperature treatment processes. The corrosion-resistant coating generally consists essentially of a rare earth oxide, and has an adhesion strength not less than about 15 MPa. According to particular embodiments, the article is a ceramic component utilized and implemented in a semiconductor processing apparatus for processing semiconductor wafers.
Abstract:
CERAMIC ARTICLE HAVING CORROSION- RESISTANT LAYER, SEMICONDUCTOR PROCESSING APPARATUS INCORPORATING SAME, AND METHOD FOR FORMING SAME An article-is provided that includes a substrate and a corrosion-resistant coating provided on the substrate. The substrate generally consists essentially of alumina, and the corrosion-resistant coating is provided so as to directed contact the substrate without the provision of intervening layers between the substrate and the corrosion-resistant coatin, such as reaction products provided by high-temperature treatment processes. The corrosion-resistant coating generally consists essentially of a rare earth oxide, and has an adhesion strength not less than about 15 MPa. According to particular embodiments, the article is a ceramic component utilized and implemented in a semiconductor processing apparatus for processing semiconductor wafers. Fig.1