摘要
介绍了一种低成本、大批量生产碳化硅晶须的新方法。以炭黑和SiO2 微粉为原料、以氯化钴作催化剂、利用粉末电热体加热技术在较低的合成温度 15 0 0℃下、较短的合成时间 2h内得到了平均直径为 0 .5 2 μm、平均长度为 16μm、生成率达 63% (质量分数 )的碳化硅晶须。实验结果表明 :与常规加热法相比 ,粉末电热体加热法不但具有设备投资少、制作简单、操作方便的优点 ,而且碳化硅晶须的合成温度低、时间短、产量大 ,易于实现规模化生产。
A new method for synthesizing silicon carbide whiskers with low cost and mass production was introduced. Research on silicon carbide whiskers was studied, which were synthesized by the powder-heating technique with carbon black and SiO2 powder as raw materials and CoCl2 as catalyst. The results indicate that silicon carbide whiskers with the average diameter of 0.52 μm and the average length of 16 μm and the content in mass of 63% can be synthesized at a lower temperature of 1500°C and in a shorter time of 2 h. Compared to the conventional heating, the powder-heating technique has advantages of less equipment investment, easy manufacture and convenient operation. Furthermore, it is very suitable for realizing the scaled production because of the lower whisker-synthesizing temperature, shorter reaction time and greater output.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2003年第4期333-335,共3页
Journal of The Chinese Ceramic Society
基金
青岛市科技局资助项目 (2 0 0 2SZK2 -0 1)
关键词
碳化硅晶须
合成
加热技术
低成本
Composite materials
Costs
Crystal whiskers
Heating
Powders
Synthesis (chemical)
