| 摘要 |
PURPOSE:To provide a method capable of obtaining a sintered compact which is dense and excellent in characteristics by heating the green compact of powder of ceramics while pressing the same isotropically. CONSTITUTION:This method is a sintering method in which powdery green compact is embedded in fluid particles with a high m.p. being a pressure transmitting medium, then its temp. is raised to the sintering starting temp. or above without applying pressure, thereafter, isotropical pressure is applied and densified at the sintering temp. By using particles excellent in fluidity as a pressure medium, pressure is almost isotropically applied. Further, by applying pressure after heating to the sintering starting temp. or above, the anisotropy of the shrinkage can be reduce, moreover, the cracking or the like caused by a pressure can be prevented from generating and a dense sintered body excellent in characteristics such as strength can be obtd. by one time sintering. |
