Preparation of Low-cost Porous Silicon Carbide Ceramic Support for Optimized Acid and Alkali Corrosion Resistance

被引：0

作者：

Gou M. ^{[1
]}

Huang J. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, East China University of Science and Technology, Shanghai

来源：

Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2019年 / 47卷 / 12期

关键词：

Acid and alkali resistance; Glass frit; Porous ceramic supports; Silicon carbide;

D O I：

10.14062/j.issn.0454-5648.2019.12.08

中图分类号：

学科分类号：

摘要：

A low-cost porous silicon carbide ceramic support was prepared by a dry pressure method with industrial grade silicon carbide as a main raw material, graphite as a pore-making agent, and low-value shale prepared glass frit as low-temperature sintering additives. The effects of composition ratio and sintering temperature on the porosity, pore size distribution, and mechanical properties as well as the acid and alkali corrosion resistance of the support body were investigated. The results show that the support with the porosity of 36.2%, the average pore size of 1.37 μm, the flexural strength of 67.1 MPa, and the pure water flux of 8 075 L/(m2•h•bar) can be obtained after sintering at 1 180℃ when SiC mass content is 80.0% (in mass fraction), glass frit content is 20.0% and graphite content is 15.0%. The residual flexural strength of the support corroded in acid and alkali solutions at 80℃ for 24 h is 47.4 MPa and 46.7 MPa, respectively, showing an excellent performance in acid and alkali corrosions. © 2019, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.

引用

页码：1737 / 1745

页数：8

共 33 条

[1] Konig K., Boffa V., Buchbjerg B., Et al., One-step deposition of ultrafiltration SiC membranes on macroporous SiC supports, J Memb Sci, 472, pp. 232-240, (2014)
[2] Madaeni S.S., Monfared H.A., Vatanpour V., Et al., Coke removal from petrochemical oily wastewater using γ-Al<sub>2</sub>O<sub>3</sub> based ceramic microfiltration membrane, Desalination, 293, pp. 87-93, (2012)
[3] Wegmann M., Michen B., Graule T., Nanostructured surface modification of microporous ceramics for efficient virus filtration, J Eur Ceram Soc, 28, 8, pp. 1603-1612, (2008)
[4] Avci G.G., Misirli Z., Gunay V., Processing and characterization of microfiltration supports prepared from alumina powders, Ceram Int, 22, 1, pp. 23-26, (1996)
[5] Pastila P.H., Helanti V., Nikkila A.P., Et al., Effect of Crystallization on Creep of Clay Bonded SiC-Filters, Ceram Eng Sci Proc, 19, 4, pp. 37-44, (1975)
[6] Popovska N., Alkhateeb E., Froba A.P., Et al., Thermal conductivity of porous SiC composite ceramics derived from paper precursor, Ceram Int, 36, 7, pp. 2203-2207, (2010)
[7] Rojas P.C., Piderit G.J., Toro P., Development of open-pore silicon carbide foams, Key Eng Mater, 132-136, pp. 1731-1734, (1997)
[8] Stuart A.R., Gonzenbach U.T., Tervoort E., Et al., Processing rutes to macroporous ceramics: a review, J Am Ceram Soc, 89, 6, pp. 1771-1789, (2010)
[9] Gubernat A., Stobierski L., Labaj P., Microstructure and mechanical properties of silicon carbide pressureless sintered with oxide additives, J Eur Ceram Soc, 27, 2, pp. 781-789, (2007)
[10] Wang F., Yao D.X., Xia Y.F., Et al., Porous SiC ceramics prepared via freeze-casting and solid state sintering, Ceram Int, 42, 3, pp. 4526-4531, (2016)

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