Heat resistant impact porous body and method for producing heat resistant impact porous body

摘要

Problem to be solved: to improve the thermal shock resistance of heat resistant impact porous body.The porous body (heat resistant impact porous body) 100 comprises a plurality of ceramic particles 10 and a bonding portion 20 made of amorphous silicon oxide as a main component to bond between a plurality of ceramic particles At least one of the ceramic particles 10 and the coupling portion 20 has a plurality of holes 30 formed with an outer peripheral edge.The plurality of holes 30 include a plurality of voids 33 present in the coupling portion 20.The diameter equivalent to the circle contained in the coupling portion 20 with respect to the area of the coupling part 20 in an optional plurality of sections is 0.1 μ The average value of the area ratio of the micro voids 32 below m is 5 to 25%.Diagram