Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7816
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSanthosh, Balanand-
dc.contributor.authorAhmetoğlu, Çekdar Vakıftr
dc.contributor.authorIonescu, Emanuel-
dc.contributor.authorReitz, Emanuel-
dc.contributor.authorAlbert, Barbara-
dc.contributor.authorSorarù, Gian Domenico-
dc.date.accessioned2020-07-18T03:35:11Z-
dc.date.available2020-07-18T03:35:11Z-
dc.date.issued2020-
dc.identifier.issn0272-8842-
dc.identifier.urihttps://doi.org/10.1016/j.ceramint.2019.11.003-
dc.identifier.urihttps://hdl.handle.net/11147/7816-
dc.description.abstractHighly porous polymer-derived SiCN(O) and SiOC ceramics with low thermal conductivity were developed by replicating polyurethane (PU) foams. The PU templates were impregnated with polysilazane or polysiloxane precursor, followed by pyrolysis at different temperatures (1200 °C - 1500 °C) yielding SiCN(O) or SiOC ceramic foams, respectively. The swelling and cross-linking behavior of the used precursors had a significant impact on the morphology of the prepared foams. The samples had bulk densities ranging from 0.03 g.cm-3 to 0.56 g.cm-3 and a total porosity in the range from 75 to 98 vol%. Fourier transform infrared (FT-IR), Raman spectroscopy, X-ray diffraction (XRD) were employed to follow the structural evolution together with morphological characterization by scanning electron microscopy (SEM). The obtained ceramics were thermally stable up to 1400 °C, and the linear thermal expansion coefficient values of the porous SiCN(O) and SiOC components in the temperature range from 30 to 850 °C were found to be ~1.72 x 10-6.K-1 and ~1.93 x 10-6.K-1, respectively. Thermal conductivity (?) as low as 0.03 W.m-1 K-1 was measured for the SiCN(O) and SiOC foams at room temperature (RT). The ? of the ceramic struts were also assessed by using the Gibson-Ashby model and estimated to be 2.1 W.m-1 K-1 for SiCN(O), and 1.8 W.m-1 K-1 for SiOC. © 2019 Elsevier Ltd and Techna Group S.r.l.en_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofCeramics Internationalen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectFoamsen_US
dc.subjectPolymer derived ceramicen_US
dc.subjectSiOCen_US
dc.subjectThermal conductivityen_US
dc.titleProcessing and thermal characterization of polymer derived SiCN(O) and SiOC reticulated foamsen_US
dc.typeArticleen_US
dc.institutionauthorAhmetoğlu, Çekdar Vakıftr
dc.departmentİzmir Institute of Technology. Materials Science and Engineeringen_US
dc.identifier.volume46en_US
dc.identifier.issue5en_US
dc.identifier.startpage5594en_US
dc.identifier.endpage5601en_US
dc.identifier.wosWOS:000515196800008en_US
dc.identifier.scopus2-s2.0-85075387731en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıtr
dc.identifier.doi10.1016/j.ceramint.2019.11.003-
dc.relation.doi10.1016/j.ceramint.2019.11.003en_US
dc.coverage.doi10.1016/j.ceramint.2019.11.003en_US
dc.identifier.scopusqualityQ1-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.grantfulltextopen-
crisitem.author.dept03.09. Department of Materials Science and Engineering-
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
Files in This Item:
File SizeFormat 
1-s2.0-S0272884219331815-main.pdf2.4 MBAdobe PDFView/Open
Show simple item record



CORE Recommender

SCOPUSTM   
Citations

27
checked on Mar 22, 2024

WEB OF SCIENCETM
Citations

27
checked on Mar 27, 2024

Page view(s)

1,092
checked on Mar 25, 2024

Download(s)

132
checked on Mar 25, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.