Patent ID: 8029882
Filing Date: 2011-10-04
Classification: B01D,C04B,Y10T

Abstract:
1. A silicon carbide porous object comprising: silicon carbide as an aggregate; metal silicon as a binder, particles of silicon carbide being bonded to one another with the binder so as to have pores thereamong; a mixture formed with the silicon carbide, the metal silicon, and metal aluminum or an alloy including metal silicon and metal aluminum, the mixture being raw materials; a metal aluminum-metal silicon-silicon carbide porous object formed from the firing of the raw materials; and a mixing ratio of the metal aluminum to the metal silicon is in the range of 0.05 to 1.5 in terms of molar ratio (Al/Si), wherein the surface of the metal silicon is selectively coated with a phase including alumina such that the surface of the metal silicon includes more of the phase including alumina than the surface of the silicon carbide, and the raw materials are fired at 600 to 1500° C. in an inert gas atmosphere or a reduced-pressure atmosphere in which an oxygen partial pressure is 10