Preparation of sintered zirconia body.

摘要

A sintered zirconia sheet is prepared by firing a green sheet of zirconia while placing at least one weight on the sheet to apply a load thereto. Preferably a weight made of a porous material having a porosity of 5 to 30% and having a weight per unit area W (g/cm<2>) and a surface area S (cm<2>) is placed on the sheet to apply a load per unit area G (g/cm<2>) to the sheet under the conditions: S </= 200, G </= 5, and W/G >/= 0.5. Sintered zirconia sheets free of camber, distortion or cracking are obtained particularly when their dimensions are at least 15 cm x 15 cm and up to 0.5 mm thick.