%0 Journal Article
%T Influence of Preparation Technology on the Structure and Phase Composition of MoSi2-Mo5Si3/SiC Multi-coating for Carbon/Carbon Composites<br>
%A Xin Yang
%A Yanhong Zou
%A Qizhong Huang
%A Zhean Su
%A Mingyu Zhang
%A Xin Chang
%A Zhiyong Xie
%A <br>
%J 材料科学技术学报
%D 2010
%I 
%X Oxidation protective MoSi2-Mo5Si3/SiC multi-coatings for carbon/carbon composites were prepared by chemical vapor reaction and slurry-sintering method. The influence of preparation technology on the structure and phase composition of the coating was investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction (XRD) analyses, and then their relationship was discussed. The results indicate that the Si/Mo ratio of the slurry and sintering processing were two main factors that significantly affected the structure and phase composition of the multi-coating. Appropriate sintering process and relatively high Si/Mo ratio were essential for preparing the multi-coating with dense structure and favorable phase composition. After being sintered at 1723 K for 2 h and with the Si/Mo ratio of the slurry being 4.5 (weight ratio), a dense structure accompanied by favorable phase composition of the coating can be obtained. When heat treated at 2373 K for 1 h, this coating became more compact and continuous. Oxidation tests (performed at 1623 and 1823 K) demonstrated that both of these two obtained multi-coatings exhibited better anti-oxidation property than single layer SiC coating.
%K Carbon/carbon composites
%K Anti-oxidation coating
%K SiC<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=A86B86C7D950A56E828524ABC10B21FB&yid=140ECF96957D60B2&vid=96C778EE049EE47D&iid=0B39A22176CE99FB&sid=F24949CFDB502409&eid=4BB057F167CF3A60&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=23