文献类型：期刊文献

英文题名：Preparation of Silicon Carbide Ceramics from Bamboo Charcoal by High-Temperature Silicon Infiltration

作者：Chen, Zhilin[1] Zhang, Jian[2] Fu, Feng[1]

第一作者：陈志林

通信作者：Chen, ZL[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China;[2]Nanjing Forest Univ, Coll Chem Engn, Nanjing, Jiangsu, Peoples R China

年份：2010

卷号：60

期号：6

起止页码：522-526

外文期刊名：FOREST PRODUCTS JOURNAL

收录：;EI(收录号：20111913969123);Scopus(收录号：2-s2.0-79955718534);WOS:【SCI-EXPANDED(收录号:WOS:000208281200006)】；

语种：英文

外文关键词：Atmospheric temperature - Bamboo - Charcoal - Chemical analysis - Differential scanning calorimetry - Energy dispersive X ray analysis - Fourier transform infrared spectroscopy - Phenolic resins - Scanning electron microscopy - Silica - Silicon carbide - X ray diffraction analysis - X rays

摘要：Bamboo charcoal, silica, and phenol-formaldehyde resin were mixed powders that were heated at temperatures from 1,500 degrees C to 1,800 degrees C in an argon atmosphere to produce a silicon carbide (SiC) ceramic. Differential scanning calorimetry (DSC), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and energy-dispersive X-ray analysis (EDXA) were used to monitor heat flow and physical, chemical, and structural changes during the formation of the ceramic. The DSC results indicated that during firing, endothermic reactions occurred below 800 degrees C, after which exothermic reactions dominated. FTIR study suggested conversion of Si-O bonds to Si-C bonds at temperatures above 1,500 degrees C. SEM and EDXA showed that the microstructure of the bamboo charcoal was observable in the ceramic structure and that the surface of the ceramic material contained a high proportion of Si. X-ray diffractometry analysis indicated that the ceramics obtained by firing above 1,650 degrees C mainly consisted of SiC with trace amounts of elemental carbon and silicon.