溶液燃烧法合成Zn（CrxAl1-x）2O4尖晶石型超细红色陶瓷色料

摘要

Zn(CrxAl1-x)O4 (0≤ x ≤1) ceramic pigment was prepared by the aqueous solution combustion method using Zn(NO3)2•6H2O, Cr(NO3)3•9H2O, Al(NO3)3•9H2O and Co(NH2)2 as starting materials. The effects of Cr3+ doping content and heat treatment temperature on the phase composition, microstructure and coloring performance of the synthesized ultraifne powder were investigated by XRD, SEM and color analyzer. The results show that the red chromatic value (a*) arrives at the maximum of 19.91 under the following conditions: Cr3+ doping content x=0.2, heat treating at 1200℃ and holding for 30 min. Morphology of the synthesized pigment shows an underdeveloped octahedral structure or a derived aggregate form, and the particle size of the above as-synthesized ceramic pigment is mainly in 150-200 nm.%以硝酸盐(硝酸锌、硝酸铬、硝酸铝)-尿素-水为反应体系，采用溶液燃烧法合成Zn(CrxAl1-x)2O4尖晶石型超细红色陶瓷色料。采用X射线衍射(XRD)、扫描电子显微镜(SEM)和色度分析仪等检测方法，研究了Cr3+掺杂量及热处理温度对合成粉体的物相组成、显微结构和呈色性能的影响规律进行了表征。结果表明：当Cr3+掺杂量x=0.2、热处理温度1200℃、保温时间30 min时，合成色料为发育不完全的八面体或由其衍生的聚形，粒径尺寸多数为150-200 nm，色料红度值(a*)达19.91最大值。