Patent ID: 6372679
Filing Date: 2002-04-16
Classification: C04B

Abstract:
A process for the production of a sintered body having excellent resistance to corrosion by molten salts which comprises the steps of providing a powder mixture A consisting essentially of Cr2O3 powder having an average particle diameter of not greater than 0.5 &mgr;m and Al2O3 powder having an average particle diameter of not greater than 0.5 &mgr;m, mixing said powder mixture A with TiO2 powder having an average particle diameter of not greater than 0.5 &mgr;m to form a powder mixture B containing the TiO2 powder in an amount of 1.5 to 15% by weight based on the combined amount of said powder mixture A and the TiO2 powder, and sintering said powder mixture B at a temperature of 1,350 to 1,600Â° C. in a vacuum atmosphere of 10âˆ’20 to 10âˆ’5 atm. to yield a sintered body consisting of an intimate solid solution of Cr2O3 and Al2O3 and having a relative density of not less than 95%.