%0 Journal Article
%T βPreparation and Dielectric Properties of Nonstoichiometric β-SiC Powder by Combustion Synthesis<br>
%A Xiaolei Su
%A Wancheng Zhou
%A Zhimin Li
%A Fa Luo
%A Dongmei Zhu
%A <br>
%J 材料科学技术学报
%D 2009
%I 
%X The nonstoichiometric β-SiC powders were synthesized via combustion reaction of Si and C system in a 0.1 MPa nitrogen atmosphere, using Teflon as the chemical activator. The prepared powders were invistigated by XRD and Raman spectra. The results indicates that the cell parameters of all the prepared β-SiC powder are smaller than the standard value of β-SiC because of generation of CSi defects. The complex permittivity of prepared products was carried out in the frequency range of 8.2 12.4 GHz. It shows that the dielectric property of prepared β-SiC powder decrease with increasing PTFE content. The effect of CSi defects on dielectric property of -SiC powder has been discussed.
%K Silicon carbide
%K Carbon antisite
%K Dielectric property<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=EFAC94B46DF1AB1D2FD9D0370C29052A&yid=DE12191FBD62783C&vid=C5154311167311FE&iid=38B194292C032A66&sid=238BD7580EFCC5AE&eid=B79ACB6EBBFC9730&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=10