Porous material and honeycomb structure

摘要

There are disclosed a porous material having a high thermal shock resistance and a honeycomb structure. The porous material contains main aggregates and auxiliary aggregates as aggregates, the main aggregates are silicon carbide particles, the auxiliary aggregates are at least either of mullite particles or alumina particles, the aggregates are bound to one another via a binding phase, so as to form pores, and the binding phase is at least one of an amorphous phase and a cordierite phase, and a porosity is from 40 to 90%. Furthermore, the honeycomb structure is constituted of such a porous material, and includes partition walls defining and forming a plurality of cells extending from one end face to the other end face.

主权项

1. A porous material containing main aggregates and auxiliary aggregates as aggregates,
wherein the main aggregates are silicon carbide particles, the auxiliary aggregates are at least one of mullite particles and alumina particles, the aggregates are bound to one another via a binding phase so as to form pores, the main aggregates are bridged by the binding phase, the average particle diameter of the main aggregates is greater than the average particle diameter of the auxiliary aggregates, the binding phase contains at least one of an amorphous phase and a cordierite phase, a porosity is from 40 to 90%, and the porous material contains 8.4 to 10.5 mass % of the auxiliary aggregates to a total mass of the main aggregates, the auxiliary aggregates and the binding phase, and 6.8 to 11.7 mass % of the binding phase to the total mass of the main aggregates, the auxiliary aggregates and the binding phase.