Synthesis of silicon carbonitride porous ceramics derived from different organo-silicon precursors

摘要：

Silicon carbonitride porous ceramics were prepared by pyrolysis of different organo-silicon polymers precursors via chlorosilanes in reaction with bis (trimethylsilyl)carbodiimide (BTSC). The thermogravimetry coupled with FTIR-Mass spectroscopy was employed to study the pyrolysis process. The ceramic yield and releasing gas species during pyrolysis were different due to three different chlorosilane-derived precursors. However, scanning electron microscope (SEM) and transmission electron microscopy (TEM) images revealed that all the SiCN ceramics pyrolysed at 1000 ℃ in N2 exhibit an amorphous porous microstructure. Tens of micron of pores were detected. Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR) spectra showed main chemical bonds of Si-N and Si-C and little of N=C=N bond in the ceramic matrix.

关键词： SiCN sol-gel process trichlorosilanes silicon carbodiimide

作者: CHENG Huijie LI Yali Kroke Edwin

作者单位: Key Laboratory of Advanced Ceramics and Machining Technology, Tianjin University, Tianjin 300072, Ch Key Laboratory of Advanced Ceramics and Machining Technology, Tianjin University, Tianjin 300072, Ch Unstitute of Inorganic Chemistry, Technology University Bergakademie Freiberg, Freiberg 09596, Germa

会议类型: 国际会议

会议名称: The 3rd Asian Conference on Molten Salts and Ions Liquids 2011(第三届亚洲熔盐与离子液体会议)

会议地点: 哈尔滨

会议语种:英文

页码: 63-66

在线出版日期: 2011-01-06（万方平台首次上网日期，不代表论文的发表时间）