用固态化学反应法以Mg为掺杂元素制备磷酸铈无机颜料,系统地研究了掺杂量、反应温度、反应时间三个因素对反应产物颜色的影响.反应物试样分别进行X射线衍射分析(XRD)、粒度测试和色度测试.试验结果表明,Mg元素的掺杂量起关键作用,当n(Mg)/n(Ce)为0.2～0.3时,可以得到直观上的草绿色试样.经XRD分析可知掺Mg后试样为磷酸铈单斜晶系粉末；经粒度检测可知,掺杂后磷酸铈颜料粉末的平均粒径在6.m～7 μm之间；最后色度测试得出的色度坐标为L*=68.2、a*=-9.3、b*=18.7,色度坐标表示的颜色为绿色.
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