Paper Title:
New Chromium-Calcium Titanate Red Ceramic Pigment
| Periodical | Advances in Science and Technology (Volume 68) |
|---|---|
| Main Theme | 12th INTERNATIONAL CERAMICS CONGRESS PART G |
| Edited by | Pietro VINCENZINI and Michele DONDI |
| Pages | 208-212 |
| DOI | 10.4028/www.scientific.net/AST.68.208 |
| Citation | Carina Gargori et al., 2010, Advances in Science and Technology, 68, 208 |
| Online since | October, 2010 |
| Authors | Carina Gargori, Roberto Galindo, Mario Llusar, Sara Cerro, Araceli García, Guillermo Monrós |
| Keywords | Ceramic Pigment, Chromium, Chromophore, Perovskite |
| Price | US$ 28,- |
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Abstract
synthesis and characterization of a new chromium- calcium titanate red ceramic pigment is described in this communication. The pigment is based on the solid solution of chromium (IV) in calcium titanate and was characterized as red-brown pigment in a CaO-ZnO-SiO2 transparent glaze used for ceramic tiles (1080ºC). XRD, UV-Vis-NIR spectroscopy and CIE-L*a*b* techniques of characterization have been employed. The L*a*b* valour of the optimal pigment with 0,015 mol/mol of chromium fired at 1100ºC with a soaking time of 3 hours and 5% weight added to the transparent glaze is 59.3/12.5/9.5. Likewise 5%w. addition of NHCl used as flux agent increase b* and decrease L* valour (L*a*b*=45.2/15.3/5.3).
