| abstract |
A laminated body includes, in sequence, a base layer mainly composed of a ceramic material and a glass material, a first constraining layer that is primarily made of a ceramic material that is not sintered at a temperature at which the base layer is sintered, a second constraining layer primarily made of a ceramic material and a glass material that are sintered at the temperature at which the base layer is sintered, and a third constraining layer primarily made of a ceramic material that is not sintered at the temperature at which the base layer is sintered. The laminated body is subsequently fired at the temperature at which the base layer is sintered. The first, second, and third constraining layers are removed from the fired laminated body to provide a ceramic body that is a sinter of the base layer. After the firing, adhesion between the base layer and the first constraining layer and adhesion between the second constraining layer and the first constraining layer are different from each other. |