Gelişmiş Arama

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dc.contributor.authorÖzel, Emel
dc.contributor.authorYurdakul, Hilmi
dc.contributor.authorTuran, Servet
dc.contributor.authorArdit, Matteo
dc.contributor.authorCruciani, Giuseppe
dc.contributor.authorDondi, Michele
dc.date.accessioned2019-10-22T16:58:44Z
dc.date.available2019-10-22T16:58:44Z
dc.date.issued2010
dc.identifier.issn0955-2219
dc.identifier.issn1873-619X
dc.identifier.urihttps://dx.doi.org/10.1016/j.jeurceramsoc.2010.08.013
dc.identifier.urihttps://hdl.handle.net/11421/21593
dc.descriptionWOS: 000283411200007en_US
dc.description.abstractCobalt-doped willemite is a promising blue ceramic pigment, but some important aspects concerning crystal structure, optical properties and technological behaviour are still undisclosed. In order to get new insight on these features, willemite pigments (Zn2-xCoxSiO4, 0 <x <0.3) were synthesized by the ceramic route and characterized from the structural (XRPD with Rietveld refinement), optical (DRS and colorimetry), microstructural (SEM, STEM, TEM, EDX, EELS) and technological (simulation of the ceramic process) viewpoints. The incorporation of cobalt in the willemite lattice, taking preferentially place in the Zn1 tetrahedral site, induces an increase of unit-cell parameters, metal-oxygen distances, and inter-tetrahedral tilting. It causes shifting and enhanced splitting of spin-allowed bands of Co2+ in tetrahedral coordination, implying slight changes of crystal field strength Dq and Racah B parameter, but increasing spin-orbit coupling parameter lambda. Willemite pigments impart deep blue hue to ceramic glazes and glassy coatings with a colouring performance better than commercial Co-bearing colorants in the 800-1200 degrees C range. Detailed SEM-TEM investigation and microanalysis proved that no diffusion phenomena occur at the pigment-glassy coating interface and that willemite pigments are chemically inert during firing at 1050 degrees Cen_US
dc.description.sponsorshipTUBITAK; CNR research foundation [104M333]en_US
dc.description.sponsorshipWe would like to thank for the financial support provided by TUBITAK and CNR research foundation under a contract number of 104M333. We would also like to thank Bilkent University for TEM sample preparation with FIB and Dr. Mustafa Oksuzoglu for his help.en_US
dc.language.isoengen_US
dc.publisherElsevier Sci LTDen_US
dc.relation.isversionof10.1016/j.jeurceramsoc.2010.08.013en_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectElectron Microscopyen_US
dc.subjectSpectroscopyen_US
dc.subjectX-Ray Methodsen_US
dc.subjectOptical Propertiesen_US
dc.subjectWillemiteen_US
dc.titleCo-doped willemite ceramic pigments: Technological behaviour, crystal structure and optical propertiesen_US
dc.typearticleen_US
dc.relation.journalJournal of the European Ceramic Societyen_US
dc.contributor.departmentAnadolu Üniversitesi, Mühendislik Fakültesi, Malzeme Bilimi ve Mühendisliği Bölümüen_US
dc.identifier.volume30en_US
dc.identifier.issue16en_US
dc.identifier.startpage3319en_US
dc.identifier.endpage3329en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.contributor.institutionauthorTuran, Servet


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