Patent ID: 8445395

Claim:
A method of manufacturing a porous ceramic part, comprising the following steps in succession: a) preparing a mixture M containing a ceramic powder in suspension, at least one gelling agent and at least one foaming agent, at a mixing temperature which is higher than a gelling temperature of said gelling agent; b) shearing said mixture M at a foaming temperature which is higher than said gelling temperature, to obtain a foam, the gelling agent being selected to make no substantial contribution to structural stabilization of said foam at said foaming temperature; c) gelling said foam by cooling said mixture M to a temperature below the gelling temperature of said gelling agent; and d) drying said gelled foam to obtain a preform; wherein a stabilizing agent is added to said mixture M, which agent has an instantaneous viscosity, in Pa·s, that increases by a factor of at least ten when a shear rate of said stabilizing agent is reduced from 100 s −1 to 0.