微波加热焦碳与石英砂合成SiC粉体  

Microwave Synthesis of SiC Powders with Coke and Quartzite

作　　者：王福[1] 王强[1] 曹文斌[1] 孙加林[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100086

出　　处：《材料工程》2009年第7期32-35,共4页Journal of Materials Engineering

基　　金：国家自然科学基金(50472094)

摘　　要：以粒度为～2μm,5～20μm,100～200μm的焦炭颗粒,粒度为～1μm的石英砂粉体为原料,采用微波加热合成了碳化硅粉体。在1600℃下保温30min,反应能完全进行,合成产物中β-SiC的含量达到98%以上。得到的SiC粉体具有与焦炭颗粒近似的颗粒尺寸。研究表明,微波加热具有节能快速的优点,能显著地促进反应的进行。SiC powders were synthesized through the reaction between coke and quartzite by microwave heating. The results show that full conversion can be achieved at 1600℃ for holding 30min and the content of SiC in the reacted powders is higher than 98%. SiC powders were synthesized from coke powders with diameters of -2μm, 5-20μm, 100-200μm, which have similar particle size with the starting coke particles. The microwave-assisted synthesis is fast and economical, and can significantly promote the reaction.

关 键 词：SIC 微波 焦炭 石英砂 

分 类 号：TQ163[化学工程—高温制品工业]