Study on Effect of Cerium-Lanthanum Ratio on the Properties of Cerium-based Polishing Powder AITranslate

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Chinese Library Classification Number:TQ133.3[化学工程—无机化工]

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The ratio of cerium to lanthanum is one of the key factors affecting the physical and chemical properties and performance of the cerium-based polishing powder.In this study,the polishing powders with different ratios of cerium to lanthanum were prepared with the precipitation method.The study results show that the cerium and lanthanum components form stable composite carbonate precursors,and form composite oxides with a single crystal phase after calcination.When the proportion of cerium in cerium and lanthanum is 95%,the primary particle size of the polishing powder is less than 100 nm,and the agglomeration effect is weak.The polishing powders with medium and low cerium proportion(≤85%)have obvious agglomeration effect and large average particle size,but they have stronger cutting force on K9 optical glass in a short time.The polishing powders with high cerium proportion(85%,95%)have more durable cutting force.Doping with a small amount of lanthanum is beneficial to improve the strength and durability of the cutting force of cerium-based polishing powder on K9 optical glass.