METHOD FOR PRODUCING SINTERED BODY

摘要

PROBLEM TO BE SOLVED: To obtain a dense glass sintered body, because pores generated inside the sintered body not only causes strength decline of the sintered body but also causes scattering of light.SOLUTION: This method for producing a sintered body includes a step of forming a compact from glass powder by dry molding, a step of obtaining a precursor by sintering the compact, and a step of obtaining a sintered body by pressurizing and sintering the precursor under a mixed gas atmosphere containing oxygen; wherein the partial pressure of oxygen in the mixed gas is ≥10 vol.%. The relative density of the precursor is 90-96%, and the relative density becomes higher than the precursor by passing through pressurization sintering under the mixed gas atmosphere.