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Development and characterization of ceramic composites based on CaZrO3-MgO

2018Conference object Open access
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dc.contributor.authorNunes-Pereira, João
dc.contributor.authorPena, Pilar
dc.contributor.authorBaudin, Carmen
dc.contributor.authorPereira Silva, A
dc.date.accessioned2024-04-05T11:10:28Z
dc.date.available2024-04-05T11:10:28Z
dc.date.issued2018
dc.description.abstractAdvanced materials for severe environment conditions, such as high temperature, wear and high erosion and corrosion, are of growing interest, namely for transport and energy industries. Particularly, in aerospace industry the increase of working temperature of engines and turbines combined with weight reduction will give rise to higher thrust and lower fuel consumption and consequently less emissions. In this sense, new ceramic multiphasic composites based on calcium zirconate (CaZrO3) and magnesium oxide (MgO) are being proposed with suitable thermal, mechanical and chemical properties for severe conditions application. In the present work, an equimolar composition of CaZrO3-MgO, processed from easily and accessible synthetic raw materials, have been developed and the particle size distribution optimized by milling under controlled conditions. CaZrO3-MgO ceramic composites uniaxially pressed disks have been produced by rate controlled sintering during 2 hours at 1400, 1450 and 1500 ºC, respectively. The physical, microstructural and mechanical properties, have been assessed to evaluate the performance and suitability of the processed materials for high responsibility applications. A homogeneous microstructure was obtained for all sintering temperature samples with porosities ranging between ~10 %, for samples sintered at 1400 ºC, to ~100 % theoretical density for samples sintered at 1500 ºC. Diametral compression strength follows the Weibull distribution with characteristic strengths between ~50 and 170 MPa, Vickers hardness reach values above 8 GPa, while the facture toughness present values between 2 and 3 MPa.m1/2, for 1400 and 1500 ºC respectively. These results show that the ceramic composites based on CaZrO3-MgO sintering at 1500 ºC proved to be a suitable alternative to high responsibility applications.pt_PT
dc.description.sponsorshipThis work has been supported by the project Centro-01-0145-FEDER-000017 - EMaDeS - Energy, Materials and Sustainable Development, co-financed by the Portugal 2020 Program (PT 2020), within the Regional Operational Program of the Center (CENTRO 2020) and the European Union through the European Regional Development Fund (ERDF).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/14360
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/pt_PT
dc.subjectCeramic multiphasic compositespt_PT
dc.subjectCalcium zirconate (CaZrO3)pt_PT
dc.subjectMagnesium oxide (MgO)pt_PT
dc.subjectDiametral compressionpt_PT
dc.subjectVickers hardnesspt_PT
dc.subjectFracture toughnesspt_PT
dc.subjectPorositypt_PT
dc.subjectHigh responsibility applicationspt_PT
dc.titleDevelopment and characterization of ceramic composites based on CaZrO3-MgOpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceBarcelona, Espanhapt_PT
oaire.citation.endPage179pt_PT
oaire.citation.startPage179pt_PT
oaire.citation.titleV Congreso Hispano-Luso de Cerámica y Vidriopt_PT
person.familyNameNunes-Pereira
person.familyNamePena
person.familyNameBaudin
person.familyNameSilva
person.givenNameJoão
person.givenNamePilar
person.givenNameCarmen
person.givenNameAbilio
person.identifier.ciencia-id6D16-6F7E-64F0
person.identifier.ciencia-idD314-9C94-0B0F
person.identifier.orcid0000-0002-6024-8716
person.identifier.orcid0000-0001-6312-7373
person.identifier.orcid0000-0002-9037-0931
person.identifier.orcid0000-0002-2100-7223
person.identifier.ridAAD-6349-2020
person.identifier.ridF-4829-2019
person.identifier.ridO-1474-2013
person.identifier.scopus-author-id57200519831
person.identifier.scopus-author-id7004962121
person.identifier.scopus-author-id7005270843
person.identifier.scopus-author-id8540933900
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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relation.isAuthorOfPublicatione01e18c8-fe1c-4c62-b27e-896786a3de72
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relation.isAuthorOfPublication.latestForDiscovery438fc4f9-5c85-487e-bc2a-e37a85be4120

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