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US 5,700,517 AGranted
Process for the densification of a porous structure by boron nitride
AssigneeCommissariat a l'Energie Atomique
InventorsPatrick David, Jean D. Benazet, Bruno Narcy
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Abstract
A 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 1.2.times.10.sup.5 Pa and thereby decomposing the precursor to form boron nitride that is deposited within the pores of the porous structure.
Claims5
A process for densifying a porous structure having pores by depositing boron nitride in the pores comprising the steps of:
- placing said porous structure in contact with a boron nitride precursor comprising a borazene having the formula RBNH, wherein R is a halogen or hydrogen, heating said boron nitride precursor at a pressure of at least 1.2.times.10.sup.5 Pa to a temperature of at least 600.degree. C., and
- forming boron nitride by decomposing said boron nitride precursor and depositing said boron nitride in said pores of said porous structure to form a densified structure.
Dependencies are inferred from the claim text.