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中文摘要：
通过采用碳酸镧（铈、镨）为前驱体，经氟化、高温焙烧、机械湿磨的方法得到稀土抛光粉，研究了不同掺镨量对稀土抛光粉的物相结构、表面形貌、粒度、密度、抛蚀量的影响。通过XRD分析得出结论：La2O3，Pr6O11固溶于CeO2的晶格结构中，并且出现了新的物相LaOF；随镨掺量的增大，LaOF的衍射峰强度不断增加，晶化程度不断增加；CeO2的XRD特征峰向左偏移，晶胞参数变大，晶面间距变大。通过粒度分析得出结论：随镨掺量的增加，抛光粉的中位粒径出现了先减小后增大的规律性变化。通过抛蚀量测试得出结论：随镨掺量的增加，抛光粉的抛蚀量出现了先增大后减小的变化。掺镨稀土抛光在镨含量为4．8％时，具有最小的中位粒径、较好的表面形貌和最大的抛蚀量。
英文摘要：
Lanthanum carbonate , cerium carbonate and praseodymium carbonate were used as precursor and processcd by fluorinating, calcinating, wet ball milling, and the rare earth polishing powder was got. The influence of praseodymium doping on phase structure, surface morphology, particle size, density, and the quality of the polishing loss was investigated. By XRD analysis it was found that La2O3, Pr6O11 was dissolved in the lattice structure of CeO2, and a new phase LaOF was generated. When the dosage of praseodymium increasing, the diffraction peak of LaOF intensity increased, and the crystallization degree of LaOF increased. The diffraction peaks of CeO2 shifted to left, this illustrated the lattice parameter and interplanar crystal spacing of CeO2 increased. By particle size analysis it was found that as the dosage of praseodymium increasing, the particle size of polishing powder decreased first, and then increased. The quality of the polishing loss test showed the polishing loss of polishing powder decreased first, then increased with the increase dosage of praseodymium. When there was 4. 8% （ mass ratio） praseodymium in polishing powder, the median particle diameter of polishing powder was minimum, the surface morphology of polishing powder was good, and the burnishing mass of polishing powder was maximum.
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