林业科学2012，Vol.48Issue(1)：138-142,5.
竹基SiC/C生物陶瓷的制备和性能
Fabrication and Performance of Bamboo-Based SiC/C Biological Ceramics
摘要
Abstract
Bamboo-based SiC ceramics were prepared by carbothermal reduction reaction between charcoal and silica that was introduced into bamboo through a sol-gel and vacuum/pressure infiltration process. The microstructure, chemical compositions and mechanical performances of the prepared ceramics were characterized. Experimental results showed that the phase compositions of the ceramics were highly dependent on the sintering temperate and time. 1 450 ℃ and 5 h could ensure almost all the SiO2 to be transformed into SiC while lower temperature and longer or shorter time will remain or produce certain quantity of SiO2 in the ceramics. The produced biological ceramic was actually a composite of higher proportional C and SiC, which was mainly formed and distributed on the surface of bamboo carbon. Compression strength, bending MOE and MOR of the composite ceramics were all found to increase and then decrease with the increase of SiO2 weight gain. Optimal mechanical performances were achieved when SiO2 weight gain was 10% and much more superior to those of bamboo carbon.关键词
竹子/溶胶-凝胶/SiC/生物陶瓷Key words
bamboo/sol-gel/SiC/biological ceramics分类
农业科技引用本文复制引用
田根林,余雁,张求慧,刘冬..竹基SiC/C生物陶瓷的制备和性能[J].林业科学,2012,48(1):138-142,5.基金项目
"十一五"国家科技支撑课题"竹基新型炭材科制备技术研究"(2006BAD19B06) （2006BAD19B06）
