Ceramic body

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PROBLEM TO BE SOLVED : To provide a jointed ceramic that can be used for a long period even in an environment of repeated high temperature.SOLUTION : A jointed ceramic 10 is formed by binding a first sintered ceramic body 1 and a second sintered ceramic body 2 via a joint layer 3 made of an oxide containing a rare earth element, silicon, aluminum, and magnesium. The content of the rare earth element in terms of the oxide in the outer part 3a of the joint layer 3 is higher than the content of the rare earth element in terms of the oxide in the inner part 3b of the joint layer 3.