Patent ID: 7993576

Claim:
A method for producing a sintered body, comprising: a) molding a composition containing a powder primarily made of an inorganic material and a binder including an aliphatic carbonic acid ester based resin in a predetermined shape so as to obtain a compact; b) exposing the compact to a first atmosphere containing an alkaline gas and thus decomposing and removing the aliphatic carbonic acid ester based resin from the compact so as to obtain a degreased body; c) sintering the degreased body so as to obtain a sintered body; and d) exposing the degreased body to a second atmosphere containing a low concentrated alkaline gas whose concentration is lower than a concentration of the alkaline gas of the first atmosphere at least once between step b) and step c), wherein the second atmosphere is primarily made of a non-oxygenated gas other than the alkaline gas.