Ga-Substituted Cobalt-Chromium Spinels as Ceramic Pigments Produced by Sol-Gel Synthesis

被引：13
|
作者：
Grazenaite, Egle [1 ,2 ]
Garskaite, Edita [3 ]
Stankeviciute, Zivile [2 ]
Raudonyte-Svirbutaviciene, Eva [4 ]
Zarkov, Aleksej [2 ]
Kareiva, Aivaras [2 ]
机构：
[1] Cultural Heritage Ctr, Dept Detailed Res, Asmenos 10, LT-01135 Vilnius, Lithuania
[2] Vilnius Univ, Inst Chem, Naugarduko 24, LT-03225 Vilnius, Lithuania
[3] Lulea Univ Technol, Dept Engn Sci & Math, Wood Sci & Engn, Forskargatan 1, S-93187 Skelleftea, Sweden
[4] Inst Geol & Geog, SRI Nat Res Ctr, Akademijos 2, LT-08412 Vilnius, Lithuania
来源：
CRYSTALS | 2020年 / 10卷 / 12期
基金：
瑞典研究理事会;
关键词：
sol– gel processing; cobalt chromite; mixed-metal oxides; gallium substitution; ceramic pigments; OXIDE; COCR2O4; NI; CO;
D O I：
10.3390/cryst10121078
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
For the first time to the best of our knowledge, cobalt-chromium spinels CoCr2-xGaxO4 with different amounts of gallium (x = 0-2 with a step of 0.5) were synthesized via the aqueous sol-gel route as ceramic pigments. The phase composition, crystallite size, morphological features, and color parameters of new compositions and their corresponding ceramic glazes were investigated using XRD, CIELab, SEM, and optical microscopy. It was demonstrated that the formation of single-phase CoCr2-xGaxO4 samples was problematic. Full substitution of Cr3+ by Ga3+ ion in the spinel resulted in the formation of light blue powders, which yielded violetish blue color for the corresponding ceramic glaze.
引用
收藏
页码：1 / 9
页数：9
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