采用化学共沉淀法成功地制备出适用于彩电显象管内荧光体着色的CoxR1-xAl2O4(R=Zn、Mg，x=0.8~1.0)钴蓝颜料：450nm波长处反射率最大提高18.2%，600nm处反射率最大降低5%.通过对该颜料反射率的影响因素,如掺杂离子类型、掺杂浓度和Co2+离子浓度的探讨，结论如下：Zn2+、Mg2+改变钴蓝颜料反射性能的作用机理为晶格畸变引起Co2+3d轨道电子能级分裂程度的变化；对于掺杂离子Zn2+、Mg2+，x下限值分别约为0.85和0.8.
A kind of CoxR1-xAl2O4(R=Zn、Mg，x=0.81.0)cobalt blue pigment suitable for luminophor of color televisions was synthesized successfully by using the chemical coprecipitation method. Compared with CoAl2O4 reflectivity,the increase of reflectivity of CoxR1-xAl2O4 is 18.2% at 450nm and --5% at 600nm respectively. Through discussing some affecting factors on this kind of pigment such as doping cation type, doping content and Co2+ content, a conclusion can be drawn that the mechanism of reflectivity properties alteration of complex cobalt blue pigments caused by doping cations Zn2+, Mg2+ is Co2+3d electronic energy level cleavage due to lattice distortion. The lower limit value of x of Zn2+, Mg2+ is 0.85 and 0.8 respectively
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