氟化物掺入对稀土抛光粉性能的影响
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摘要
研究了晶型碳酸镧铈的制备,并以其为前驱体,分别加入氟化钠和氢氟酸两种氟化物制备抛光粉。通过XRD、SEM、粒度分布、振实密度、切削力及其对玻璃的抛光性能等实验的表征得出如下结果:氟化钠的加入改变了颗粒形貌,形成椭球型颗粒,但氟化钠未能改变抛光粉的物质结构;氢氟酸使得粉末颗粒细化,密度提高,一致性好,并改变了物质结构,析出了四方结构的氟氧化镧(LaOF)。两种氟化物的加入均提高了抛光粉的切削率,但掺入氢氟酸制备的抛光粉抛光效果更好。
The synthesis of crystalline lanthanum carbonate as precursor,and the preparation polishing powder by adding sodium fluoride and hydrofluoric respectively was studied.The experimental characterizations of XRD,SEM,particle size distribution,tap density,cutting force,and polishing performance of the glass revealed that the addition of sodium fluoride made the morphology of the particles ellipsoidal, but the material structure of the polishing powder was no change.However,the addition of hydrofluoric acid not only made the particles fine and uniform, but also changed the structure of the material and precipitates the LaOF of the tetragonal structure,as well as the tap density was also improved. Simultaneously,the addition of two fluorides could increase the cutting rate of the polishing powder,but the polishing powder prepared by doping with hydrofluoric acid had a better effect.
The synthesis of crystalline lanthanum carbonate as precursor,and the preparation polishing powder by adding sodium fluoride and hydrofluoric respectively was studied.The experimental characterizations of XRD,SEM,particle size distribution,tap density,cutting force,and polishing performance of the glass revealed that the addition of sodium fluoride made the morphology of the particles ellipsoidal, but the material structure of the polishing powder was no change.However,the addition of hydrofluoric acid not only made the particles fine and uniform, but also changed the structure of the material and precipitates the LaOF of the tetragonal structure,as well as the tap density was also improved. Simultaneously,the addition of two fluorides could increase the cutting rate of the polishing powder,but the polishing powder prepared by doping with hydrofluoric acid had a better effect.
引文
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[14]杨国胜,崔凌霄,谢兵,等.氟对铈基稀土抛光粉性能的影响研究[J].稀土,2016,37(6):80-85.
[15]周新木,李炳伟,李永绣,等.高铈抛光粉表面电性及悬浮液分散稳定性研究[J].稀土,2007,28(1):12-16.
[2]李学舜.稀土抛光粉的生产及应用[J].中国稀土学报,2002,20(5):392-397.
[3]李学舜.稀土碳酸盐制备铈基稀土抛光粉的研究[D].沈阳:东北大学,2007.
[4]黄绍东,李培忠,李学舜.稀土抛光粉研磨试验研究[J].包钢科技,2003,29(2):83-85.
[5]柳召刚,张盼,李梅,等.纯铈稀土抛光粉中氟行为的研究[J].稀土,2014,35(2):13-18.
[6]吴锦绣,李梅,柳召刚,等.含氟稀土抛光粉制备工艺条件的研究[C]∥第十七届全国冶金反应工程学学术会议论文集.北京:中国金属学会出版社,2013:1012-1018.
[7]胡天润.制备稀土抛光粉热处理过程中氟的行为[J].中国稀土学报,2005,23(S):280-281.
[8]贾慧灵.铈基稀土抛光粉氟化行为的第一性原理研究[D].北京:北京化工大学,2017.
[9]曹晓俊,柳召刚,李梅,等.碳酸铈焙烧过程中晶粒长大的蒙特卡洛法模拟[J].有色金属:冶炼部分,2012(6):47-49.
[10]杨来东,李梅,柳召刚,等.含氟铈基稀土抛光粉的制备及其抛光性能[J].有色金属:冶炼部分,2013(4):45-48.
[11]陈杰.铈基抛光粉的制备过程研究[D].沈阳:东北大学,2005.
[12]王梦雨.粉末粒度测试方法与未来发展方向[J].有色金属:冶炼部分,2006(增刊):108-110.
[13]黄令漫,郝志庆,萧桐.共沉淀法制备超细含氟铈基抛光粉[J].稀土,2016,37(3):100-104.
[14]杨国胜,崔凌霄,谢兵,等.氟对铈基稀土抛光粉性能的影响研究[J].稀土,2016,37(6):80-85.
[15]周新木,李炳伟,李永绣,等.高铈抛光粉表面电性及悬浮液分散稳定性研究[J].稀土,2007,28(1):12-16.