CERAMIC MATERIAL COMPRISING FRUSTOCONICAL TUBULAR PORES

摘要

Product formed from a ceramic material, at least part of the said product not being formed from amorphous silica and comprising pores and satisfying the following criteria(a), (b) and (c): (a)at least 70% by number of the said pores are frustoconical tubular pores extending substantially parallel to each other in a longitudinal direction; (b)in at least one cross-section plane, the mean size of the cross sections of the said pores is greater than 0.15µm and less than 300µm; (c)in at least one cross-section plane, at least 50% by number of the pores have a convexity index Ic of greater than 87%, the convexity index of a pore being equal to the ratio Sp/Sc of the surfaces Sp and Sc delimited by the perimeter and by the convex envelope of the said pore, respectively.