METHOD FOR MANUFACTURING TRANSLUCENT ALUMINA CERAMIC, TRANSLUCENT ALUMINA CERAMIC, LIGHT EMITTING VESSEL FOR HIGH-PRESSURE DISCHARGE LAMP, GRANULATED POWDER, AND FORMED BODY

摘要

PROBLEM TO BE SOLVED: To keep the total light transmittance and linear transmittance of a translucent alumina ceramic high, and to reduce the dispersion in the transmittance.;SOLUTION: In order to manufacture the translucent alumina ceramic, a granulated powder is prepared by granulating an alumina raw material powder and a binder with a spray dryer, forming the granulated powder into a formed body, and firing the formed body. The alumina raw material powder is produced from aluminum sulfate. The granulated powder has an average fine pore diameter of 0.5 to 2.0 μm.;COPYRIGHT: (C)2004,JPO&NCIPI