Abstract: A manufacturing method of a sintered ceramic body mixes barium silicate with aluminum oxide, a glass material, and an additive oxide to prepare a material mixture, molds the material mixture and fires the molded object. The barium silicate is monoclinic and has an average particle diameter in a range of 0.3 ?m to 1 ?m and a specific surface area in a range of 5 m2/g to 20 m2/g. The aluminum oxide has an average particle diameter in a range of 0.4 ?m to 10 ?m, a specific surface area in a range of 0.8 m2/g to 8 m2/g. A volume ratio of the aluminum oxide to the barium silicate is in a range of 10% by volume to 25% by volume.

Abstract: There are disclosed a porous material having excellent heat resisting properties and an excellent resistance to heat shock. A porous material contains aggregates and an amorphous binding agent to bind the aggregates to one another in a state where pores are formed among the aggregates, the binding agent contains a rare earth element, the amorphous binding agent preferably contains magnesium, aluminum, silicon, the rare earth element and oxygen, and the amorphous binding agent preferably contains 8.0 to 15.0 mass % of MgO, 30.0 to 60.0 mass % of Al2O3, 30.0 to 55.0 mass % of SiO2, and 1.5 to 10.0 mass % of the rare earth oxide.

Abstract: There is disclosed a honeycomb structure which has an excellent collecting performance of a particulate matter and in which a pressure loss during flowing of a fluid through the honeycomb structure is low. The honeycomb structure includes a honeycomb base material having porous partition walls with which a plurality of cells are formed to become through channels of a fluid, a value of a ratio of an average open frontal area diameter of pores which are open in the surfaces of the partition walls to an average pore diameter of the pores formed in the partition walls is from 0.05 to 0.45, the partition walls have a single layer structure, and preferably, an open frontal area diameter of each of the pores which are open in the surfaces of the partition walls is from 0.5 to 10 ?m.

Abstract: A manufacturing method of a sintered ceramic body mixes barium silicate with aluminum oxide, a glass material, and an additive oxide to prepare a material mixture, molds the material mixture and fires the molded object. The barium silicate is monoclinic and has an average particle diameter in a range of 0.3 ?m to 1 ?m and a specific surface area in a range of 5 m2/g to 20 m2/g. The aluminum oxide has an average particle diameter in a range of 0.4 ?m to 10 ?m, a specific surface area in a range of 0.8 m2/g to 8 m2/g. A volume ratio of the aluminum oxide to the barium silicate is in a range of 10% by volume to 25% by volume.