Research of Thermal Shock Resistance of Si3N4 and SiC
The study is carried out combing with the production practice in Danjiangkou Hongyuan SiC limited.Si3N4 and SiC were prepared successfully from SiC and Silicon power in nitrogen atmosphere at 1425℃ and 1375℃ sintering temperature by the serial of techniques,such as ingredients,mixing,molding and drying,respectively.In the actual production,silicon powder content and sintering temperature will directly influence the products of the bending strength and thermal shock resistance.By measuring bending strength,porosities,bulk density,XRD and FESEM,the bending strength and thermal shock resistance of samples were studied mainly by changing sintering temperature and silicon powder content.The results show that bending strength and thermal shock resistance of sample which was added 16% Si powder is best.And bending strength and thermal shock resistance of sample of 1425℃ sintering temperature is higher than that of 1375℃ sintering temperature.
Si3N4 and SiC Silicon powder Thermal shock resistance Bending strength
Fang Zhang Zhiliang Huang
School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan, 430073, PR China
国际会议
太原
英文
691-694
2012-06-23（万方平台首次上网日期，不代表论文的发表时间）