METHOD FOR DENSIFYING A POROUS STRUCTURE USING BORON NITRIDE, AND POROUS STRUCTURE DENSIFIED WITH BORON NITRIDE

摘要

PCT No. PCT/FR94/03171 Sec. 371 Date May 24, 1996 Sec. 102(e) Date May 24, 1996 PCT Filed Nov. 24, 1994 PCT Pub. No. WO95/14645 PCT Pub. Date Jun. 1, 1995A process for densifying a porous structure with boron nitride includes placing the porous structure in a borazene precursor of the formula RBNH wherein R is a halogen or hydrogen, heating by induction at a pressure of at least 1.2x105 Pa and thereby decomposing the precursor to form boron nitride that is deposited within the pores of the porous structure.