Effect of Roasting Conditions of Rich Cerium Rare Earth Carbonate on Crystallite Morphology and Polishing Ability of Ceria-Based Rare Earth Oxide

摘要：

The granule shape and crystal structure of the the ceria-based rare earth oxide which were roasted at 600～1050℃ for 2～6h and then cooled in furnace, cooled out of furnace or cooled in water were studied by means of XRD and SEM. The results revealed that the rich cerium rare earth carbonate could be changed into the rare earth oxide which was a kind of sandwich made of globose granule whose diameter was between 0.5～3.0μm after being roasted in 900℃ for 2h. This kind of crystal lattice in rare earth oxide belonged to face-centered cubic lattice and its space between crystal surface 111 and 200(viz. L<,111> and L <,200>) would enlarge as the roasting temperature increasing. With increasing roasting temperature, L <,111> would rise straightly upward, and L<,200> would rise straightly upward when roasting time was 2 ~4h but changed little when roasting time was 4~6h. The glass-polishing experiments found that the polishing ability of the ceriabased rare earth oxide was the best as L<,111> was 43~53nm and the L<,200> was 43～56nm.

关键词： polishing powder ceria-based rare earth oxide crystal lattice polishing ability rare earths

作者: Wu Wenyuan(吴文远) Li Xueshun(李学舜) Chen Jie(陈杰) Yang Guosheng(杨国胜) Tu Ganfeng(涂赣峰)

作者单位: Baotou Tianjiao Seimi Rare-Earth Polishing Powder Co.Ltd.,Baotou 014010,China Baotou Tianjiao Seimi Rare-Earth Polishing Powder Co.Ltd.,Baotou 014010,China Baotou Tianjiao Seimi Baotou Tianjiao Seimi Rare-Earth Polishing Powder Co.Ltd., Baotou 014010,China Baotou Tianjiao Seimi Rare-Earth Polishing Powder Co.Ltd.,Baotou014010,China

会议类型: 国际会议

会议名称: 第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)

会议地点: 包头

会议语种:英文

页码: 125-128

在线出版日期: 2007-08-07（万方平台首次上网日期，不代表论文的发表时间）