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Solid solutions of mixed metal Mn3−xMgxFe4(PO4)6orthophosphates: colouring performance within a double-firing ceramic glaze
dc.contributor.author | Llusar, Mario | |
dc.contributor.author | Badenes March, José Antonio | |
dc.contributor.author | García López, Araceli | |
dc.contributor.author | Gargori, Carina | |
dc.contributor.author | Galindo Llorach, Roberto | |
dc.contributor.author | Monrós, Guillermo | |
dc.date.accessioned | 2012-09-10T08:19:39Z | |
dc.date.available | 2012-09-10T08:19:39Z | |
dc.date.issued | 2011-03 | |
dc.identifier.citation | Ceramics International (March 2011), vol. 37, no. 2, 493–504 | |
dc.identifier.issn | 0272-8842 | |
dc.identifier.uri | http://hdl.handle.net/10234/46363 | |
dc.description.abstract | Solid solutions of mixed metal Mn3−xMgxFe4(PO4)6 orthophosphates (x = 0, 0.5, 1, 1.5, 2, 2.5, and 3) were prepared for the first time (from coprecipitate powders calcined up to 1000 °C) and characterized by thermal analysis, XRD, SEM/EDX, UV–vis–NIR spectroscopy and colour measurements (CIE-L*a*b*). Orthophosphate (Mn,Mg)3−yFe4+z(PO4)6 solid solutions isotypic to Fe7(PO4)6 structure (triclinic P-1(2) spatial group) formed successfully as the major crystalline phase within the studied range of compositions, accompanied only by variable quantities of α- and/or β-Mg2P2O7 diphosphates as secondary phases. Noteworthy, the obtained solid solutions were tested as potential ceramic dyes and exhibited an interesting interaction upon enamelling within a double-firing ceramic glaze: considerable amounts of Fe segregated from the solid solutions to be stabilized as hematite particles (α-Fe2O3) in the ceramic glaze and conferring the glaze an intense dark-brown colouration, which was almost independent of the amount of Mg doping. Thus, the obtained solid solutions with a minimized Mn content (especially Mg3Fe4(PO4)6 composition, without Mn) could serve as low-toxicity Fe reservoirs to stabilize hematite in double-firing glazes and produce an interesting dark-brown colouration, being an alternative to other brown ceramic pigments containing hazardous metals (i.e. Cr, Ni, Zn, or Sb). | ca_CA |
dc.description.sponsorShip | The Spanish “Ministerio de Educación y Ciencia” (project MAT2008-02893) | ca_CA |
dc.format.extent | 12 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language | eng | ca_CA |
dc.language.iso | cat | ca_CA |
dc.publisher | Elsevier | ca_CA |
dc.rights | © 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | A. Sol–gel processes | ca_CA |
dc.subject | C. Colour | ca_CA |
dc.subject | Orthophosphates | ca_CA |
dc.subject | Hematite | ca_CA |
dc.subject | Brown ceramic dyes | ca_CA |
dc.title | Solid solutions of mixed metal Mn3−xMgxFe4(PO4)6orthophosphates: colouring performance within a double-firing ceramic glaze | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1016/j.ceramint.2010.09.004 | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://www.sciencedirect.com/science/article/pii/S0272884210003421 | ca_CA |
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