New red-shade ceramic pigments based on Y2Sn2-xCrxO7-δ pyrochlore solid solutions

被引:0
|
作者
Pavlov, RS [1 ]
Castelló, JBC [1 ]
Marzá, VB [1 ]
Hohembergerger, JM [1 ]
机构
[1] Univ Jaume 1, Dept Inorgan & Organ Chem, Castellon de La Plana 12080, Spain
关键词
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中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
New high-stability red-shade ceramic pigments based on pyrochlore solid solutions Y2Sn2-xCrxO7-delta (x = 0-1, 0 < delta = 0-(1)/(2)x) were developed employing conventional solid-state reaction synthesis. The relationship between their optical properties and microstructure was analyzed by X-ray diffractometry and ultraviolet-visible-light spectroscopy. Decomposition of the structure with formation of the perovskite YCrO3 observed for chromium substitutions x 2: 5 was attributed mainly to high concentration of defects. The structural and optical parameters of the materials were found to correlate with the concentration of a species with higher oxidation state than Cr(III), such as Cr(IV) or Cr(V).
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页码:1197 / 1202
页数:6
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