Influence of pyrolysis temperature on fracture response in SiOC based composites reinforced by basalt woven fabric

0433976 - ÚFM 2015 RIV GB eng J - Článek v odborném periodiku
Chlup, Zdeněk - Černý, Martin - Strachota, Adam - Sucharda, Zbyněk - Halasová, Martina - Dlouhý, Ivo
Influence of pyrolysis temperature on fracture response in SiOC based composites reinforced by basalt woven fabric.
Journal of the European Ceramic Society. Roč. 34, č. 14 (2014), s. 3389-3398. ISSN 0955-2219. E-ISSN 1873-619X
Grant CEP: GA ČR GAP107/12/2445; GA MŠMT(CZ) ED1.1.00/02.0068
Institucionální podpora: RVO:68081723 ; RVO:67985891 ; RVO:61389013
Klíčová slova: Fracture behaviour * CMCs * Pyrolysis * Basalt fibre * Polysiloxane
Kód oboru RIV: JL - Únava materiálu a lomová mechanika; JI - Kompozitní materiály (USMH-B); JH - Keramika, žáruvzdorné materiály a skla (UMCH-V)
Impakt faktor: 2.947, rok: 2014

The fracture resistance of ceramic based composites reinforced by various ceramic fibres can be dramatically enhanced when an efficient fracture mechanism takes place during the crack propagation. Presented work shows an effect of the pyrolysis temperature of the composite matrix on the fracture behaviour of the composite. The matrix is formed from the polysiloxane resin precursor and the reinforcement is a basalt woven fabric. The temperature range under investigation was from 600°C, where the onset of fracture properties were observed up to 800°C. Above this temperature basalt fibres suffer by rapid degradation of the microstructure. The optimum stage of the polysiloxane resin transformation maximizing the fracture resistance of the composite was identified. The fractographic analysis of the fracture surfaces revealed the differences in the acting fracture mechanism.
Trvalý link: http://hdl.handle.net/11104/0238482