To provide a method capable of producing a sintered compact free from the generation of crack even in a large sized or complicated ceramic formed body, small in deformation and having excellent dimensional accuracy.
This sintering method of the ceramic formed body comprises charging a ceramic powder in a firing tool 4, taping the ceramic powder so as to be 15-70% in relative density to form a powder bed 3, arranging a ceramic formed plate 2 on the powder bed 3, placing the ceramic formed body 1 on the ceramic molded plate 2 and sintering. The material of the ceramic formed body 1 and the ceramic formed plate 2 are preferably the same and it is preferable that the flatness of the upper surface of the ceramic formed plate 2 is ≤1mm and the difference of sintering shrinkage factor between the ceramic formed body 1 and the ceramic formed plate 2 is ≤1%.
KUROISHI TOMOYOSHI
ITO NAOKI
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