Siliceous porous body and a manufacturing method thereof carbide, and the honeycomb structure

Silicon carbide-based porous body of the present invention, the silicon carbide particles and metallic silicon, formed by coupling in a state of holding the pores between the between the silicon carbide particles mutually, and / or silicon carbide particles and metallic silicon carbide a silicon porous body among the pores, between the silicon carbide particles mutually the surface, or the shortest distance of at least some of the following micropores part 10μm between the silicon carbide particle surface and metallic silicon surface, silicon, it is buried oxide phase containing the respective oxides of aluminum and alkaline earth metals, the total volume of the portion oxide phase is not buried among the pores including fine pore portions (total for pore volume), the proportion of the total volume of the portion oxide phase is not buried among the fine pore portions (pore volume of fine pore portions) is not less than 20%, for example, filters for purifying exhaust gases of a motor vehicle configure and catalyst carrier etc. It can be suitably used as that material.