Synthesis by pyrolysis of aerosols and ceramic application of Cr-doped CaYAlO 4 red–orange pigments

The synthesis of red–orange Cr-doped YCaAlO 4 pigments has been improved (softer thermal conditions and lower environmental impact) and optimised by using the pyrolysis of aerosols method. We also study the crystallochemical features of the Cr chromophore with special emphasis on its oxidation state...

Full description

Saved in:
Bibliographic Details
Published inJournal of the European Ceramic Society Vol. 29; no. 11; pp. 2193 - 2198
Main Authors Lyubenova, T. Stoyanova, Carda, J.B., Ocaña, M.
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.08.2009
Subjects
Chromium
Pigment
Spray pyrolysis
YCaAlO 4
Chromium
Pigment
Spray pyrolysis
YCaAlO 4
Online AccessGet full text

Cover

More Information
Summary:The synthesis of red–orange Cr-doped YCaAlO 4 pigments has been improved (softer thermal conditions and lower environmental impact) and optimised by using the pyrolysis of aerosols method. We also study the crystallochemical features of the Cr chromophore with special emphasis on its oxidation state which has not been yet clarified, finding that Cr(III) and Cr(IV) species are present in the octahedral and interstitial tetrahedral sites of the YCaAlO 4 lattice, respectively. Finally, the applicability of this system as ceramic pigment was tested using conventional industrial glazes. A change from orange to pink shades was detected after glaze firing, which is mainly attributed to the Cr 3+ to Cr 4+ oxidation.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2009.01.020