Patent ID: 6508964
Filing Date: 2003-01-21
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 having a dome shape including a projected upper surface and a concaved lower surface, and having a varying thickness along the predetermined axial direction; accommodating the ceramic formed body in a hot press apparatus; setting 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; applying a pressure along the predetermined axial direction of 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 a ceramic sintered body; and controlling a thickness of the ceramic sintered body in such a manner that a maximum thickness in the predetermined direction is not more than two times a minimum thickness in the predetermined direction.