Preparation of SiO2 coated Ce2S3 red pigment with improved thermal stability

被引：34
|
作者：
Chen Guanhong [1 ]
Zhu Zhenfeng [1 ]
Liu Hui [1 ]
Wu Yingfeng [1 ]
Zhu Chunkui [1 ]
机构：
[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Peoples R China
来源：
JOURNAL OF RARE EARTHS | 2013年 / 31卷 / 09期
关键词：
Ce2S3; red pigment; SiO2; coating; cerium silicon molar ratio; thermal stability; rare earths; RARE-EARTH SULFIDES; STABILIZATION; GAMMA-CE2S3; GROWTH; CE; ND;
D O I：
10.1016/S1002-0721(12)60375-5
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
SiO2 coated Ce2S3 red pigment was prepared in ethanol/H2O system via sol-gel method and TEOS were used as silica sources. X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), UV-visible spectrophotometer and automatic colorimeter were used to investigate the properties of the samples. The results showed that the compact SiO2 film formed on the surface of Ce2S3 pigment at a cerium silicon molar ratio of 2. The thermal stability temperature of Ce2S3 pigment was improved to 450 degrees C after SiO2 coating. In addition, the color of Ce2S3 pigment was not affected significantly through coating colorless and transparent SiO2 and it could be used as safe red pigment in higher temperature fields.
引用
收藏
页码：891 / 896
页数：6
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