DEVELOPMENT OF SI-B-O-N FIBERS FROM POLYBOROSILAZANE

Authors
FUNAYAMA O NAKAHARA H TEZUKA A ISHII T ISODA T
Citation
O. Funayama et al., DEVELOPMENT OF SI-B-O-N FIBERS FROM POLYBOROSILAZANE, Journal of Materials Science, 29(8), 1994, pp. 2238-2244
Citations number
13
Categorie Soggetti
Material Science
Journal title
Journal of Materials Science → ACNP
ISSN journal
00222461
Volume
29
Issue
8
Year of publication
1994
Pages
2238 - 2244
Database
ISI
SICI code
0022-2461(1994)29:8<2238:DOSFFP>2.0.ZU;2-X
Abstract
A polyborosilazane, which is a precursor of ceramic fibre, was synthes ized from perhydropolysilazane and trimethyl borate. The polyborosilaz ane was dry-spun and then pyrolysed to produce amorphous Si-B-O-N fibr e. The Si-B-O-N fibre retained its high tensile strength to higher tem peratures (about 1600-degrees-C). The fibre has a density of 2.4 g cm- 3, tensile strength of 2.5 GPa and an elastic modulus of 180 GPa.