Patent ID: 6432353
Filing Date: 2002-08-13
Classification: B82Y,C04B,H01L,H05K

Abstract:
A method of producing an oxide ceramic sintered body which comprises the steps of:molding a raw material oxide ceramic powder having a mean grain size of about 1 &mgr;m or less and a BET specific surface area of about 5 m2/g or more to produce a ceramic molded body having a maximum pore size of about 0.5 &mgr;m or less, and firing said ceramic molded body in an atmosphere having an oxygen concentration of about 95% or higher at a temperature at least 100Â° C. higher than the lowest sintering temperature of said raw material powder for a time shorter than the time at which the sintering can be achieved at said lowest sintering temperature; wherein the temperature during firing in the firing step is raised at a rate of 180Â° C./hour or higher.