Evolution of the phases and the polishing performance of ceria-based compounds synthesized by a facile calcination method.
Evolution of the phases and the polishing performance of ceria-based compounds synthesized by a facile calcination method.
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通过简易煅烧方法合成的二氧化铈基化合物的物相演变和抛光性能
DOI：
10.1039/c9ra05751j
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发表时间：
2019-08-23
期刊：
影响因子：
3.9
通讯作者：
Zhou, Lihu
中科院分区：
文献类型：
--
作者：
Pei, Wenli;Zhao, Dong;Chen, Xianghui;Wang, Xiaoyang;Yang, Xingbo;Wang, Jianjun;Li, Zhijie;Zhou, Lihu
以工业级氟化碳酸镧铈为前驱体，通过简单的煅烧方法制备了添加La和F的氧化铈基化合物（CLF化合物）。研究了化合物在制备过程中的相结构演变及其与抛光性能的关系。该化合物由三个相组成：CeO2，LaOF和LaF3。可以通过调节煅烧过程来控制相组成。较高的煅烧温度和较高的煅烧温度导致更多的LaOF和较少的LaF3相的形成。LaOF相具有较高的切削速率。当LaOF相含量为18%左右时，抛光效率最高。金属间化合物LaF3是一种低硬度相，在抛光过程中容易破碎，这降低了去除率并缩短了抛光粉的使用寿命。以工业级氟化碳酸镧铈为前驱体，通过简单的煅烧方法制备了添加La和F的氧化铈基化合物（CLF化合物）。
Ceria-based compounds with additions of La and F (CLF compounds) were prepared by using industrial-grade fluorinated lanthanum cerium carbonate as a precursor via a facile calcination method. The evolution of phase structures of the compounds during preparation and the relationship between the structure and the polishing performance were investigated. The compounds consist of three phases: CeO2, LaOF, and LaF3. The phase component could be controlled by tuning the calcination process. A higher degree of fluorination and a higher calcination temperature led to the formation of more LaOF and less LaF3 phases. The LaOF phase performs a higher stock removal rate. The best polishing efficiency was achieved with LaOF phase ratio around 18%. Intermetallic LaF3 is a low-hardness phase and is easily crushed during polishing, which lowers the removal rate and shortens the useful life of the polishing powder. Ceria-based compounds with additions of La and F (CLF compounds) were prepared by using industrial-grade fluorinated lanthanum cerium carbonate as a precursor via a facile calcination method.
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影响因子：
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