Chemical Research in Chinese Universities ›› 2010, Vol. 26 ›› Issue (3): 352-354.

• Articles • Previous Articles     Next Articles

Synthesis of Small-sized Coesite Under Lower Pressure

WANG De-jun1,2, LIU Xiao-mei1*, ZHU Cheng-jun1, YAN Duan-ting1, LIU Fu-lin1 and SU Wen-hui1,3,4   

  1. 1. State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130021, P. R. China;
    2. Adult Education College of Changchun University, Changchun 130022, P. R. China;
    3. Center of the Condensed Matter Science and Technology, Harbin Institute of Technology, Harbin 150001, P. R. China;
    4. International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, P. R. China
  • Received:2010-01-25 Revised:2010-03-24 Online:2010-05-25 Published:2010-07-27
  • Contact: LIU Xiao-mei. E-mail: xiaomeiliu58@sina.com
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.50872041 and 10674034), the National Foundation for Fostering Talent in Basic Science of China(No.J0730311) and the Foundation of State Key Laboratory of Superhand Materials(No.200908).

Abstract:

With the help of high-energy mechanical milling and α-SiO2 as the initial material, we investigated the synthesis of coesite at a high temperature and high pressure under the condition of adding a certain amount of hard Fe filling. The synthetic samples were measured by XRD and Raman spectroscopy. The results show that a small amount of small-sized coesite can be obtained under 2.5 GPa and 973 K.

Key words: Coesite; High temperature and high pressure; High-pressure micro-area; α-SiO2