Patent ID: 6306325
Filing Date: 2001-10-23
Classification: B28B,C04B

Abstract:
A method of manufacturing a ceramic sintered body having a different thickness along a predetermined axial direction, comprising the steps of:providing a ceramic formed body to be sintered having a different thickness along the predetermined axial direction;providing an upper forming mold and a lower forming mold each having a forming surface corresponding to an upper surface and a lower surface of the ceramic formed body;forming a metal member corresponding to the forming surface of the upper forming mold or the lower forming mold;embedding the metal member in the ceramic formed body;accommodating the ceramic formed body in a hot press apparatus between the upper and lower forming molds;applying a pressure along the predetermined axial direction to the ceramic formed body via the upper forming mold and the lower forming mold while heating the ceramic formed body to perform a hot press sintering thereof to thus form the ceramic sintered body; andcontrolling a thickness of the ceramic sintered body in such a manner that a maximum thickness in the predetermined direction is not two times or more larger than a minimum thickness in the predetermined direction.