摘要
研究了碳热还原法低温合成ＳｉＣ粉末。对ＳｉＣ－Ｃ系统进行了热力学分析以 指导合成工艺。研究了合成温度、保温时间、ＳｉＯ２／Ｃ配比等对合成ＳｉＣ粉末的影响， 并对合成的ＳｉＣ粉末的成型性能和烧结性能进行了研究，在此基础上制定出较为合 理的合成工艺制度。由此制得晶粒尺寸约为０．１μｍ，二次粒径小于０．５μｍ的烧结性 能较佳的β－ＳｉＣ粉末。
We do a research into the low - temperature - synthesizing SiC powder by carbon- heating dioxidizing method and doing a thermodynamic analysis in order to guide the synthesis process. We do a look into the effect of synthesis temperature, the temperature - keeping time and the Sio2/C＇s preparation ratio on synthesized SiC powder. In the mean time, we study the synthesized SiC powder’s moulding and sintering performance. On a basis of the above, we lay down a relatively reasonable synthesizing rules and regulations. Thereby, we obtain the β- SiC Powder which has the better sintering property and whose crystal - particle size is about 0. 1μm as well as the quadric crystal - particle size is less than 0. 5μm.
出处
《江苏陶瓷》
CAS
2001年第2期12-15,共4页
Jiangsu Ceramics
关键词
碳热还原法
低温合成
SIC粉体
性能
碳化硅
Carbon- heating dioxidizing method Low - temperature synthesis SiC Powder Performance
