Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (07): 1443-1448.doi: 10.3866/PKU.WHXB20090724

• ARTICLE • Previous Articles     Next Articles

Polishing Property of α-Al2O3 Nanoflakes Prepared by Self-Burning Method

YIN Xiao-Guang, ZHANG Qi-Kai, LIU Jin-Ku, ZHONG Xin-Hua, CHAI Rui, LIAN Jia-Song, CHAI Chun-Fang   

  1. Laboratory for Advanced Materials, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, P. R. China|Zhejiang Ultrafine Powders&Chemicals Co. Ltd., Yueqing 325611, Zhejiang Province, P. R. China
  • Received:2009-03-03 Revised:2009-04-14 Published:2009-06-26
  • Contact: LIU Jin-Ku E-mail:jkliu@ecust.edu.cn

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Abstract:

α-Al2O3 nanoflakes with good dispersion and uniform size were controllably synthesized using a self-burning method under similar conditions and with aluminum nitrate and glycin as raw materials. Product structure was studied by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy, etc. Thermodynamic properties of the precursor were studied using thermogravimetry-differential thermal analysis (TG-DTA). The effects of different morphologies and sizes of α-Al2O3 nanomaterials on their polishing property were investigated for the first time. Results of the polishing study indicate that the small size nanoflakes with a high purity quotient have the best polishing property compared to other α-Al2O3 materials. This study is expected to have potential value for the industrial production and practical application of these α-Al2O3 nanomaterials in the polishing field.

Key words: Alumina, Controllable synthesis, Self-burning, Polishing property