| 摘要 |
PURPOSE:To suppress deformation of piezoelectric ceramic sintered compacts by arranging piezoelectric ceramic compacts in a gap between a pair of holding plates oppositely through specific spacers and burning the aforementioned compacts. CONSTITUTION:A pair of holding plates 3 are arranged oppositely through a pair of spacers 2, having a larger thickness than that of piezoelectric ceramic compacts 1 before burning and providing a smaller thickness than that of the compacts 1 with a higher shrinkage factor than that of the compacts 1 after the burning and the compacts 1 are placed in the gap between the holding plates 3. The resultant sandwich is then arranged in a sheath and heated to reduce the thickness of the spacers 2 from that of the compacts 1 and a load of the holding plates 3 is applied to carry out the burning. |
