| 摘要 |
PROBLEM TO BE SOLVED: To obtain a setter which sinters moldings of lead titanate zirconate ceramics to sintered compacts having a uniform grain size and decreased fluctuations without the occurrence of fattening of crystal grains and which itself is resistant to cracking by specifying the compsn. of the setter for sintering which is loaded with the moldings and consisting of lead titanate zirconate. SOLUTION: The setter 4 for sintering which consists of the lead titanate zirconate and is loaded with the moldings 1 to 3 of the lead titanate zirconate ceramics e.g.: Pb[Mn1/3 Sb213 )0.08 Zr0.41 Ti0.51 ]O3 } is formed of the compsn. which contains Pb at a ratio lower in a range of 0 to 0.15 than the moldings 1 to 3 and has a Zr/Ti ratio higher in a range of 0 to 0.4. Consequently, the fattening of the crystal grains of the sintered compacts of the molding 3 in contact with the setter 4 by reacting with the setter 4 does not arise any more and the sintered compacts having the uniform grain size is obtainable. The differences in the thermal properties between the moldings 1 to 3 and the setter 4 are relieved and the setter 4 resistance to cracking is obtd. |
