Yellow Zn x Ni 1− x WO 4 pigments obtained using a polymeric precursor method

New tungstate-based ceramic pigments, displaying Zn x Ni 1− x WO 4 stoichiometry, were obtained at low temperature using a polymeric precursor method. The powder precursors were milled in an attritor mill in an alcoholic medium and heat treated for 12 h, yielding homogeneous and crystalline powder p...

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Published inDyes and pigments Vol. 77; no. 1; pp. 210 - 216
Main Authors de Oliveira, André Luiz M., Ferreira, Jailson M., Silva, Márcia R.S., Braga, Glauco S., Soledade, Luiz E.B., Maria Aldeiza, M.A. Maurera, Paskocimas, Carlos A., Lima, Severino J.G., Longo, Elson, Gouveia de Souza, Antonio, Garcia dos Santos, Iêda M.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2008
Subjects
Absorbance
Colorimetry
Tungstate
Wolframite
Yellow pigments
Wolframite
Absorbance
Yellow pigments
Colorimetry
Tungstate
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Summary:New tungstate-based ceramic pigments, displaying Zn x Ni 1− x WO 4 stoichiometry, were obtained at low temperature using a polymeric precursor method. The powder precursors were milled in an attritor mill in an alcoholic medium and heat treated for 12 h, yielding homogeneous and crystalline powder pigments. Characterization (TG/DTA, XRD, IR and colorimetry) showed that mass loss increased with increasing Zn contents. Despite the presence of secondary phases and impurities, the wolframite phase was present in all samples. IR analysis revealed bands related to Me–O and [WO 6] 6− group stretching was observed. The intensity of the yellow color of the pigments increased with increasing amount of nickel.
ISSN:0143-7208
1873-3743
DOI:10.1016/j.dyepig.2007.05.004