高密度碳酸稀土制备超细抛光粉的研究  

Study of Superfine Polishing Powder Prepared by High Density Rare Earth Carbonate

作　　者：周新木[1] 王爱勤[1] 李静[1] 阮桑桑 李永绣[1] 

机构地区：[1]南昌大学化学学院,江西南昌330031

出　　处：《稀土》2015年第5期21-25,共5页Chinese Rare Earths

基　　金：中物院超精密加工技术重点实验室开放基金项目(KF13005)

摘　　要：以高浓度稀土料液为原料,高温下制备的稀土碳酸盐为高密度碱式碳酸稀土,然后以高密度碳酸稀土为原料,采用高温爆裂法制备超细稀土抛光粉。通过SEM、粒度测定、抛光测定对样品进行表征。研究了不同的煅烧模式、爆裂温度、老化时间和老化温度对稀土氧化物形貌、粒度和性能的影响。结果表明:高密度碱式碳酸稀土在900℃~950℃高温爆裂、900℃~1000℃老化3 h^4 h,得到粒径D50为290 nm左右,分散性、抛光效果较好的超细稀土抛光粉,并可实现超细稀土抛光粉工业化生产。Rare earth stock solution with high concentration transforms into rare earth carbonate at high temperature,which is high density cerium hydroxycarbonate. Using the high density cerium hydroxycarbonate as raw material,superfine rare earth oxide polishing powder is prepared by high temperature decrepitation method. The obtained products are characterized by scanning electron microscopy（ SEM）,particle size analyzer and polishing experiments. Influence of the calcination mode,decrepitation temperature,aging time and aging temperature on morphology,particle size and polishing property of the rare earth oxide was investigated. The results show that the superfine polishing powder with particle size D50 of 290 nm,good dispersibility and good polishing property is prepared when the decrepitation temperature is 900 ℃ - 950 ℃ and aging temperature and time are 900 ℃ - 1000 ℃ and 3 h - 4 h,respectively. Industrial- scale production of the superfine rare earth polishing powder can be realized.

关 键 词：化学机械抛光 高密度碳酸稀土 高温爆裂法 超细抛光粉 

分 类 号：O614.33[理学—无机化学]