Publication detail

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

CHLUP, Z. CERNÝ, M. STRACHOTA, A. SUCHARDA, Z. HALASOVÁ, M. DLOUHÝ, I.

Czech title

Vliv pyrolýzní teploty na lomovou odezvuu kompozitů na bázi SiOC vyztužených čedičovou tkaninou

English title

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

Type

journal article in Web of Science

Language

en

Original abstract

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 fibressuffer 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.

Czech abstract

Lomová odolnost kompozitů na bázi keramik vyztužených různými keramickými vlákny může být dramaticky zvýšena, dojde-li k účinku lomového mechanismu při šíření trhliny. Předložená práce ukazuje efekt pyrolýzní teploty kompozitní matrice na lomové chování kompozitu. Matrice je tvořená z polysiloxanového prekurzoru a výztuží je čedičová tkanina. Studovaný teplotní rozsah byl od 600 C, kdy dochází k počátku lomových vlastností, až do 800 C. Nad touto teplotou trpí čedičové vlákno rapidní degradací mikrostruktury. Byla nalezena optimální pyrolýzní teplota transformace polysiloxanové pryskyřice vedoucí k maximalizaci lomové odolnosti kompozitu. Fraktografická analýza lomových povrchů odhalila rozdílné lomové mechanismy, jež v kompozitech nastaly.

English abstract

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 fibressuffer 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.

Keywords in Czech

CMCs, pyrolýza, tepelné zatěžování, rozhraní

Keywords in English

CMCs, pyrolysis, heat treatment, interface

RIV year

2014

Released

01.04.2014

ISSN

0955-2219

Volume

34

Number

14

Pages from–to

3389–3398

Pages count

10

BIBTEX


@article{BUT109095,
  author="Zdeněk {Chlup} and Martin {Černý} and Adam {Strachota} and Zbyněk {Sucharda} and Martina {Halasová} and Ivo {Dlouhý},
  title="Influence of pyrolysis temperature on fracture response in SiOC based composites reinforced by basalt woven fabric",
  year="2014",
  volume="34",
  number="14",
  month="April",
  pages="3389--3398",
  issn="0955-2219"
}