Effects of Starting Carbon Sources on the Carbothermal Synthesis of SiC Powders
Silicon carbide (SiC) powders have been prepared at 1200-1500℃ by carbothermal reduction of two kind precursors of carbonl/silica mixtures:coked rice husk with high-carbon content,and gasified rice husk with low-carbon content mixed with carbon powders as an external carbon sources.The differences in nature of carbon matter in the external source and coked rice husk,and their effect on SiC synthesis have been studied by TG-DSC,TEM,XRD and laser diffraction technique.Experimental results show that the difference in nature of carbon source may affect the formation of SiC powders.The characteristics of the synthesized SiC particles strongly depend on the characteristics of the carbon sources.
SiC powders carbothermal synthesis carbon source rice husk ash
Cheng Junhua Wen Dijiang
Institute of Material Engineering, Yancheng Institute of Technology, Yancheng 224003, China; Institu Institute of Material Engineering, Soochow University, Soohou 215021, China
国际会议
The Sixth China International Conference on High-Performance Ceramics(第六届中国先进陶瓷国际研讨会(CICC-6))
哈尔滨
英文
754-757
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）