Effect of Co2O3 Addition on the Properties of Acid Resistance of Porous SiC Ceramics

4th Annual International Workshop on Materials Science and Engineering

Dong, Youming^1 ; Deng, Xiangyun^1 ; Xu, Chengshi^1 ; Wang, Yanying^1

College of Physics and Materials Science, Tianjin Normal University, Tianjin

300387, China^1

关键词: Corrosion degree;    Degree of corrosion;    Electronic balances;    Filtration pressures;    Natural environments;    Porous ceramics;    Solution concentration;    X ray diffractometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/381/1/012020/pdf
DOI  :  10.1088/1757-899X/381/1/012020

来源: IOP

【 摘 要 】

The acid resistance of the support which with Co2O3 dopant was studied in this paper. SEM S4800 / TM3000 was used to characterize the corroded support in different natural environment, and the corrosion degree of the support was measured by means of electronic balance. The phase structure of sintered support were analyzed by X-ray diffractometer, the filtration pressure drop of sintered support were measured by filtration pressure drop test system, the bending strength of sintered support were measured by YLN- electronic press. The results show that the new support prepared by adding Co2O3 on the basis of the original SiC porous ceramic support has good acid resistance. The corrosion time and solution concentration have effect on the degree of corrosion of the support. While the corrosion time growth and the higher concentration of the solution that the support soaked in, the degree of corrosion of the support is more serious. However, the degree of corrosion decreased after the addition of Co2O3. No matter how serious the degree of corrosion of the support is, there is no effect on the pressure drop of the support.