Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (07): 722-726.doi: 10.3866/PKU.WHXB20040711

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Ultrafine Nano Suspensions of Rare Earth Oxides Prepared by High-energy Ball Milling in Pure Water

Chen Lei;Liu Zhong-Hai;Shen Lei;Bao Jun;Liu Wen-Han;Gao Chen   

  1. Structure Research Laboratory, University of Science and Technology of China; National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei　230026
  • Received:2003-12-22 Revised:2004-03-10 Published:2004-07-15
  • Contact: Gao Chen E-mail:cgao@ustc.edu.cn

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Abstract: Rare-earth oxides Ln2O3(Ln=La, Ce) ultrafine nano suspensions in pure water were prepared by a high energy ball-milling technique. The effects of ball milling time and rotating speed on the stability of suspensions and particles structure were investigated. Increasing the ball-milling time and rotating speed is in favor of improving the stability of suspensions. The size, distribution and surface charge characteristics of particle in suspensions maybe the important factors for stability of suspensions. These suspensions have excellent stability, high concentration, high surface tension and low viscosity.

Key words: Rare earth oxides, Ultrafine nano suspension, High-energy ball milling