METHOD FOR PRODUCING HIGHLY PURE SINTERED POLYCRYSTALLINE YTTRIUM OXIDE BODY HAVING HIGH TRANSPARENCY

摘要

When highly pure yttrium oxide is press molded into a desired shape and then the press molded body thus obtained is sintered at an elevated temperature in the presence of a beryllium compound, a sintered polycrystalline yttrium oxide body excellent in transparency is easily obtained at a comparatively low molding pressure and at a comparatively low sintering temperature.