焙烧温度对铈基稀土抛光粉抛光性能影响的研究

A Study of the Impact of Roasting Temperature on the Performance of Ce-based Rare Earth Polishing Powder

以混合碳酸镧铈为原料,经过HF氟化、过滤、干燥,得到抛光粉前驱体,通过DT-TGA对其分解过程进行研究。在600℃-1000℃条件将前驱体焙烧5h,制备出含氟铈基稀土抛光粉。通过研究焙烧温度对抛光粉晶体结构、抛光能力及抛光后玻璃表面光洁度的影响,发现焙烧温度越高,抛光能力越强;焙烧温度超过950℃,玻璃表面划痕急剧增多。

Taking the mixed lanthanum cerium carbonate as raw materials and the polishing powder obtained after HF-fluorinating,filtering and drying as the precursor,this research observes the decomposition process of the precursor through DT-TGA. Then the precursor is calcined at 600℃ to 1000℃ for 5h and the cerium based and fluorine contained polishing powder is prepared. After studying the effect of the calcination temperature on crystal structure of the polishing powder,its polishing ability,and its surface fineness after polishing,this research finds that the higher the calcination temperature is,the stronger the polishing ability becomes,and the glass surface scratches sharply increase when the calcination temperature exceeds 950 ℃.