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dc.contributor.authorLlusar, Mario
dc.contributor.authorBermejo, T.
dc.contributor.authorPrimo Gil, José Eulogio
dc.contributor.authorGargori García, Carina
dc.contributor.authorEsteve, V.
dc.contributor.authorMonrós Tomás, Guillermo
dc.date.accessioned2017-11-28T13:21:42Z
dc.date.available2017-11-28T13:21:42Z
dc.date.issued2017-08-15
dc.identifier.citationLLUSAR, M., et al. Karrooite green pigments doped with Co and Zn: Synthesis, color properties and stability in ceramic glazes. Ceramics International, 2017, vol. 43, no 12, p. 9133-9144.ca_CA
dc.identifier.issn0272-8842
dc.identifier.issn1873-3956
dc.identifier.urihttp://hdl.handle.net/10234/170580
dc.description.abstractThe solid-state synthesis and stabilization of Co doped (Mg1−xCoxTi2O5), Zn doped (Mg1−xZnxTi2O5) and Co- and Zn-codoped karrooite solid solutions (Mg0.8−xZn0.2CoxTi2O5 and (Mg0.5Zn0.5)1−xCoxTi2O5) were investigated. In addition, the optical spectra, color properties and technological performance of (Co,Zn)-karrooite compositions as new green ceramic pigments were also analyzed. XRD characterization revealed for the first time the high solid solubility of Zn2+ in MgTi2O5 karrooite at 1200 ºC (between 60 and 80 mol% per Mg or karrooite formula unit). In contrast, the reactivity and stabilization of karrooite phase decreased in the case of Co2+ doping. Interestingly, codoping with Zn2+ ions at high molar ratios (Zn:Mg ratio equal to 1:1) enhanced the reactivity and enabled the stabilization of (Co,Zn)-MgTi2O5 karrooite solid solutions, even with high Co2+ loadings (20 mol% per karrooite formula unit). The (Co,Zn)-MgTi2O5 pigments exhibited yellowish-green colors associated to Co2+ ions allocated in octahedral M1 and M2 sites of karrooite lattice, and becoming more intense and less yellow the higher the Co content. However, Zn2+ codoping produced less saturated green colors with similar green but lower yellowish hues. The obtained pigments were not stable enough within the tested ceramic glazes, giving rise to turquoise colorations due to cobalt leaching and incorporation into tetrahedral sites of the glassy phase. The stability of Co-karrooite green pigments was higher in a Ca- and Zn-enriched ceramic glaze (B) fired at a higher temperature (1050 °C).ca_CA
dc.format.extent12 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherElsevierca_CA
dc.relation.isPartOfCeramics International, 2017, vol. 43, no 12, p. 9133-9144ca_CA
dc.rightsCopyright © 2017 Elsevier B.V.ca_CA
dc.subjectColor (C)ca_CA
dc.subjectTiO2 (D)ca_CA
dc.subjecttransition metal oxides (D)ca_CA
dc.subjectpseudobrookite pigments (E)ca_CA
dc.titleKarrooite green pigments doped with Co and Zn: Synthesis, color properties and stability in ceramic glazesca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttps://doi.org/10.1016/j.ceramint.2017.04.062
dc.relation.projectIDUniversitat Jaume I de Castellon / P1.1B2015-19); Spanish "Ministerio de Economia y Competividad" / MAT2015-69443-Pca_CA
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttp://www.sciencedirect.com/science/article/pii/S0272884217306703ca_CA
dc.date.embargoEndDate2019-08-15
dc.type.versioninfo:eu-repo/semantics/acceptedVersionca_CA


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