人工晶体学报2017，Vol.46Issue(1)：79-84,6.
共沉淀法制备CoAl2 O4陶瓷颜料及其呈色机理研究
Fabrication and Coloration Mechanism of CoAl2 O4 Ceramic Pigment by Co-precipitation Method
摘要
Abstract
Cobalt aluminate ( CoAl2 O4 ) ceramic pigment powders were fabricated by co-precipitation method. Compositions, morphologies and valence state of CoAl2 O4 ceramic pigment powders were characterized by XRD, SEM and XPS. Effects of Co/Al ratio, pH value and calcination temperature on color properties of the samples were also investigated. Finally, coloration mechanism of the pigment was discussed. The results show that the resulting samples are of the typical spinel structure. The blue CoAl2 O4 ceramic pigment with high chroma was obtained when the Co/Al ratio is 0. 7∶2, pH value is 11 and calcination temperature is 1200 ℃. And, the color change of CoAl2 O4 ceramic pigments is mainly related with the valence of Co elements in the products. CoAl2 O4 ceramic pigments contain Co3 O4 ( Co4+) when the Co content or pH of the precursor solution is high, then crystal lattice distortion could be occured when Co3 O4 entered into the CoAl2 O4 to form a solid solution, resulting in a green ceramic pigment.关键词
铝酸钴/陶瓷颜料/共沉淀/呈色机理Key words
CoAl2 O4/ceramic pigment/co-precipitation/coloration mechanism分类
化学化工引用本文复制引用
宋苑,郑元林,汤玉斐,焦阳锋..共沉淀法制备CoAl2 O4陶瓷颜料及其呈色机理研究[J].人工晶体学报,2017,46(1):79-84,6.基金项目
国家自然科学基金(51202188) （51202188）
