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Effect of ageing at 1200 degrees C in oxidative environment on the mechanical response of SiOC foams
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SYSNO ASEP 0448209 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of ageing at 1200 degrees C in oxidative environment on the mechanical response of SiOC foams Author(s) Chlup, Zdeněk (UFM-A) RID, ORCID
Černý, Martin (USMH-B) RID, ORCID, SAI
Strachota, Adam (UMCH-V) RID, ORCID
Svítilová, Jaroslava (USMH-B)
Halasová, Martina (UFM-A)Number of authors 5 Source Title Ceramics International. - : Elsevier - ISSN 0272-8842
Roč. 41, č. 7 (2015), s. 9030-9034Number of pages 5 s. Language eng - English Country GB - United Kingdom Keywords SILICON OXYCARBIDE GLASSES ; PARTIALLY PYROLYZED COMPOSITES ; PRECERAMIC POLYMER ; CERAMIC FOAMS ; POLYSILOXANE Subject RIV JH - Ceramics, Fire-Resistant Materials and Glass Subject RIV - cooperation Institute of Macromolecular Chemistry - Macromolecular Chemistry
Institute of Rock Structure and Mechanics - Materials Fatigue, Friction MechanicsR&D Projects GAP107/12/2445 GA ČR - Czech Science Foundation (CSF) ED1.1.00/02.0068 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 ; UMCH-V - RVO:61389013 ; USMH-B - RVO:67985891 UT WOS 000355711700101 EID SCOPUS 84929270010 DOI 10.1016/j.ceramint.2015.03.273 Annotation Polysiloxane resin was used for development of light weight high temperature resistant foams using the starch foaming technique. The porosity was obtained in the range from 80% to 90%. The pore size effect on the elastic properties was determined and the obtained results were explained with the help of FEM simulation of model situations. The effect of ageing at 1200 degrees C in air on the density and mechanical properties was determined. The ageing changed slightly the density of foams. The elastic modulus decreased by 15% for the dwell time of 2 h. The extension of the dwell time had no additional effect. The compressive strength related to the density keeps the same trend when ageing is applied. The differences between as received and aged microstructure of foams were explained using SEM analysis. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2016
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