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Stability and coloring properties of Ni-qandilite green spinels (Ni,Mg)2TiO4: The “half color wheel” of Ni-doped magnesium titanates
dc.contributor.author | Llusar, Mario | |
dc.contributor.author | García, E. | |
dc.contributor.author | García, M.T. | |
dc.contributor.author | Gargori, Carina | |
dc.contributor.author | Badenes March, José Antonio | |
dc.contributor.author | Monrós, Guillermo | |
dc.date.accessioned | 2016-05-13T18:06:57Z | |
dc.date.available | 2016-05-13T18:06:57Z | |
dc.date.issued | 2015-11 | |
dc.identifier.issn | 0143-7208 | |
dc.identifier.uri | http://hdl.handle.net/10234/159625 | |
dc.description.abstract | Solid solutions of Ni-doped qandilite spinel (Mg2−xNixTiO4, x = 0–0.4) prepared by solid-state and citrate-gel routes were investigated as potential ceramic pigments or dyes. Fired powders were characterized by conventional solid-state and color-measurement techniques. The increase of Ni-doping favored qandilite decomposition in Ni-geikielite (Ni,Mg)TiO3 and Ni-periclase (Ni,Mg)O. In the ceramic route, Ni-doped qandilite was stabilized at 1400 °C, but still accompanied by small amounts of MgTiO3 and MgO. Remarkably, the citrate-gel route enabled the formation of single-phase qandilite already at 1200 °C (up to 10%mol Ni), and at 1400 °C for all amounts of Ni-doping. Ni-doped qandilite developed green colors due to Ni2+ ions allocated exclusively in octahedral sites of qandilite spinel, being the green colors of higher chroma in citrate-gel powders. Ni-qandilite powders were chemically instable in low-temperature (950–1050 °C) ceramic glazes, acting only as yellow ceramic dyes. Optical properties of Ni-doped karrooite, geikielite and qandilite pigments were compared. | ca_CA |
dc.description.sponsorShip | The authors acknowledge the Spanish “Ministerio de Economía y Competividad” (Project MAT2012-36988-C02-01) for financial support. The technical assistance provided by the Scientific Instrumentation Central Services (SCIC) of the University Jaume I is also fully acknowledged. | |
dc.format.extent | 14 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | Elsevier | ca_CA |
dc.relation.isPartOf | Dyes and Pigments, 2015, vol. 122 | ca_CA |
dc.rights | Copyright © 2015 Elsevier Ltd. All rights reserved. Copyright © 2016 Elsevier B.V. or its licensors or contributors. ScienceDirect ® is a registered trademark of Elsevier B.V. | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | Nickel magnesium titanates | ca_CA |
dc.subject | Qandilite | ca_CA |
dc.subject | Geikielite | ca_CA |
dc.subject | Karrooite | ca_CA |
dc.subject | Green ceramic pigments | ca_CA |
dc.subject | Citrates route | ca_CA |
dc.title | Stability and coloring properties of Ni-qandilite green spinels (Ni,Mg)2TiO4: The “half color wheel” of Ni-doped magnesium titanates | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1016/j.dyepig.2015.07.014 | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://www.sciencedirect.com/science/article/pii/S014372081500282X | ca_CA |
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