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dc.creatorŠaponjić, Aleksandra
dc.creatorStanković, Miroslav
dc.creatorMajstorovic, Jelena
dc.creatorMatović, Branko
dc.creatorIlic, Svetlana
dc.creatorEgelja, Adela
dc.creatorKokunesoski, Maja
dc.date.accessioned2019-01-30T17:44:12Z
dc.date.available2019-01-30T17:44:12Z
dc.date.issued2015
dc.identifier.issn0272-8842
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/1654
dc.description.abstractPorous silica ceramics were obtained at low forming pressure and low sintering temperature by using diatomaceous earth as a silica source and boric acid as an inexpensive additive. The starting raw material, diatomite from surface coal mine Kolubara, Serbia, was purified from organic and inorganic impurities by using heat and chemical treatment. Boric acid was used as binding and sintering aid up to 2 wt%. Powder was compacted by using different pressures of 40, 60 and 80 MPa. The pressed samples were sintered at 850, 1000, 1150, and 1300 degrees C for 4 h in air. A relatively high porosity in the range of 60-70% is obtained for the samples pressed at 40, 60 and 80 MPa and sintered at 1000 degrees C. Median pore size diameters are in the range of macroporous up to 2 mu m in the samples sintered at 1150 and 1300 degrees C. X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scaning electron microscopy (SEM) and mercury porosimetry measurements were employed to characterize the phases, functional groups, microstructure and pore size distribution of the obtained samples. In addition, measurements of densities and open porosities by immersion technique, according to Archimedes principle, were used. The relations between mechanical properties (Young modulus, Poisson ratio, and compressive strength) versus content of boric acid in the investigated samples were studied and disscussed.en
dc.publisherElsevier Sci Ltd, Oxford
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45012/RS//
dc.rightsrestrictedAccess
dc.sourceCeramics International
dc.subjectSinteringen
dc.subjectPorosityen
dc.subjectDiatomiteen
dc.subjectBoric aciden
dc.titlePorous ceramic monoliths based on diatomiteen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractКокунесоски, Маја; Сапоњиц, Aлександра; Егеља, Aдела; Мајсторовиц, Јелена; Илиц, Светлана; Станковић, Мирослав; Матовић, Бранко;
dc.citation.volume41
dc.citation.issue8
dc.citation.spage9745
dc.citation.epage9752
dc.citation.other41(8): 9745-9752
dc.citation.rankM21
dc.identifier.doi10.1016/j.ceramint.2015.04.046
dc.identifier.rcubConv_3353
dc.identifier.scopus2-s2.0-84930930019
dc.identifier.wos000356549100071
dc.type.versionpublishedVersion


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