超细锡铈复合氧化物的制备及其抛光性能  

Preparation of Ultra-fine Tin-cerium Mixed Oxides and Their Polishing Performance for Optical Glass

作　　者：罗巍[1] 周雪珍[1] 李艳花[1] 项神佑[1] 李永绣[1] 

机构地区：[1]南昌大学稀土与微纳功能材料研究中心化学系,江西南昌330031

出　　处：《稀土》2011年第3期14-18,共5页Chinese Rare Earths

基　　金：国家自然科学基金项目资助(20161004);江西省主要学科学术带头人计划;江西省自然科学基金资助

摘　　要：以SnCl2.2H2O和Ce2(CO3)3.8H2O为原料,氨水为沉淀剂,采用湿固相机械化学法制备了不同比例的锡铈复合氧化物。研究了煅烧温度和反应物配比对最终产物相组成和粒度大小的影响,并分别评价了用于K9、ZF7玻璃的抛光性能。结果表明,复合氧化物的主晶相为立方萤石型氧化铈,次晶相为二氧化锡。随煅烧温度从800℃升高到1000℃,合成产物的结晶度提高,但抛光速率并不随之提高。具有抛光增强效果的复合氧化物是在800℃煅烧温度下合成的锡复配量超过50%的复合氧化物。达到最好抛光效果所需的Sn∶Ce的量之比与抛光玻璃有关,ZF7玻璃为5∶5,K9玻璃为6:4。Abstract： A series of tin - cerium mixed oxides with different compositions were successfully synthesized by wet - solid mechanical chemical processing （MCP） using SnC12 · 2H20 and Ce2 （CO3 ）3 ＂ 8H20 as starting reagents, ammonia as precipitator. The effects of Sn - Ce ratio and calcination temperature on the phase composition and particle size were investigated. Their polishing performance for K9, ZF7 glasses was also evaluated. The results showed that the crystal phase of synthesized mixed oxides includes cubic ceria and tetragonal tin dioxide. With the calcination temperature increasing from 800℃ so 900℃ and 1000℃, the crystallinity of mixed oxides increased; however, the material removal rate （MRR） showed a little decrease. The enhancement of MRR was observed for the samples synthesized at 800℃ with tin molar fraction over 50%. The optimal Sn - Ce molar ratio is related to the type of glass to be polished, 5：5 for ZFI glass and 6：4 for K9 glass.

关 键 词：锡铈复合氧化物 化学机械抛光 光学玻璃 

分 类 号：O614.33[理学—无机化学] O614.32[理学—化学]