%0 Journal Article
%T Preparation and Basic Properties of a New Porous SiC<br>一种新型多孔SiC的制备与性能研究
%A WANG Wei
%A XUE Tao
%A JIN Zhi-Hao
%A QIAO Guan-Jun
%A <br>王伟
%A 薛涛
%A 金志浩
%A 乔冠军
%J 无机材料学报
%D 2008
%I Science Press
%X A new type of porous silicon carbide was fabricated by filter paper-phenolic resin composite through mold-stacking, drying, carbonization and Si infiltration process. When the carbonization temperature is fixed, with the increase of the content of phenolic resin, the open porosity of porous carbon decreases, and the bending strength of porous carbon increases. When the weight ratio of phenolic resin and filter paper is fixed, with the increase of carbonization temperature, the open porosity of porous carbon decreases, and the bending strength of porous carbon increases. SEM observation reveals that the irregular interconnected pores are derived from the disorder arrangement of filter paper microfibers and the different shrinkage ratios between phenolic resin and filter paper during carbonization. Moreover, these pores remain to form SiC. Open porosity of porous silicon carbide increases, and bending strength and fracture toughness decrease with the increase of Si removing time. When the samples are heated up to 1650~C with 30min Si removing, the excess Si in bigger pores is removed, the resulting porous SiC has higher bending strength and fracture toughness.
%K porous SiC
%K liquid Si infiltration
%K bending strength
%K porosity<br>多孔碳化硅
%K 液相渗硅
%K 强度
%K 气孔率
%K 多孔碳化硅
%K 性能
%K 研究
%K Porous
%K SiC
%K Basic
%K Properties
%K 大孔隙
%K 弯曲强度
%K 时间
%K 硅结构
%K 规则
%K 收缩率
%K 纸纤维
%K 照片
%K 碳化温度
%K 质量比
%K 成分
%K 用量
%K 气孔率
%K 固定
%K 结构均匀
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=B278621985D7674B5CD33387DC6A88AB&yid=67289AFF6305E306&vid=EA389574707BDED3&iid=CA4FD0336C81A37A&sid=91C9056D8E8856E0&eid=A63576421B012172&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=0&reference_num=11