Process for the densification of a porous structure by boron nitride

US5700517A · kind A · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Patrick David · Blaustein, DE
• Jean D. Benazet · Dijon, FR
• Bruno Narcy · Montreuil, FR

Key dates

• Filing date: May 24, 1996
• Grant date: Dec 23, 1997
• Expiry date: May 24, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/94
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

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.