Patent ID: 9604853
Date: 2017-03-28
CPC Classifications: C01F,C01P,C04B

Claim:
1. A method for manufacturing a light-transmissive metal oxide sintered body comprising: subjecting a sintered body composed mainly of metal oxide to hot isostatic pressing (HIP) treatment at a HIP heat treatment temperature T set in a range of 1,000 to 2,000° C. to form a light-transmissive sintered body, wherein the HIP treatment includes heating at a ramp rate over a temperature range from room temperature to the HIP heat treatment temperature T, the temperature range is divided into a plurality of stages, the ramp rate is controlled in each divided stage, and the ramp rate of at least a final stage inclusive of the HIP heat treatment temperature T is 10° C./h to 60° C./h.