Patent ID: 6994886
Filing Date: 2006-02-07
Classification: C04B

Abstract:
1. A method for film-boiling densifying a porous structure, comprising: a) depositing, around at least one part of the porous structure, a filter made of a material different from that forming the porous structure said material being a textile of mineral or organic fibers and said filter having a permeability lower than that of the porous structure; b) immersing the porous structure with the so-deposited filter in a liquid precursor which decomposes under heat; c) heating the porous structure with the so-deposited filter in the liquid precursor to decompose the liquid precursor and to deposit the decomposition product of said liquid precursor into the pores of the porous structure, until the porous structure is densified, wherein a flow rate of the liquid precursor into the porous structure in the presence of the so-deposited filter is less than a flow rate of the liquid precursor into the porous structure in the absence of the so-deposited filter.