Lifetime study of unidirectional Nicalon - polysiloxane composites at elevated temperatures

0207574 - USMH-B 20000059 RIV PL eng C - Conference Paper (international conference)
Glogar, Petr - Hvizdoš, P. - Kolář, František - Rudnayová, E.
Lifetime study of unidirectional Nicalon - polysiloxane composites at elevated temperatures.
Brittle Matrix Composites 6. Warszawa: ZTUREK RSI and Woodhead Publishing, 2000 - (Brandt, A.; Li, V.; Marshall, I.), s. 557-565. ISBN 1-85573-551-2.
[Brittle Matrix Composites 6. Warszawa (PL), 09.10.2000-11.10.2000]
R&D Projects: GA ČR GA104/00/1140; GA ČR GA106/99/0096
Grant - others:GA SR(SK) 2/5162/98
Institutional research plan: CEZ:AV0Z3046908
Subject RIV: JH - Ceramics, Fire-Resistant Materials and Glass

Nicalon - reinforced composites with ex-polymethylphenylsiloxane matrix were made by pyrolysis at 700 - 1000řC. The bending strength and work to fracture slightly decreased with increasing pyrolysis temperature 700 - 900řC but dropped for samples pyrolysed at 1000 C. The cumulative damage of almost all samples took place in the stress interval of 100 - 150 MPa. The lifetime tests showed a slight tendency of decreasing the stress resistance with increasing test temperature from 500řC to 600řC.
Permanent Link: http://hdl.handle.net/11104/0103141