文献类型：期刊文献

中文题名：低成本多孔碳化硅陶瓷支撑体的制备及耐酸碱性能优化

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

作者：苟敏涛[1];黄建国[1]

机构：[1]华东理工大学材料科学与工程学院

年份：2019

卷号：47

期号：12

起止页码：1737

中文期刊名：硅酸盐学报

外文期刊名：Journal of The Chinese Ceramic Society

收录：CSTPCD;;EI(收录号：20200308038434);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

语种：中文

中文关键词：多孔陶瓷支撑体;碳化硅;玻璃熔块;耐酸碱腐蚀

外文关键词：porous ceramic supports;silicon carbide;glass frit;acid and alkali resistance

摘要：以工业级碳化硅为主要原料、石墨作为造孔剂,利用低值页岩制备的玻璃熔块为低温烧结助剂,通过干压成型法制备了多孔碳化硅陶瓷支撑体。研究了组成配比、烧结温度对支撑体孔隙率、孔径分布、力学性能及耐酸碱腐蚀性能的影响。结果表明:在1 180℃烧结,当SiC含量为80.0%(质量分数)、玻璃熔块含量为20.0%、外加15.0%的石墨时、可制得孔隙率为36.2%、抗弯强度为67.1 MPa、平均孔径为1.37μm、纯水通量为8 075 L/(m^2·h·bar)的支撑体。该支撑体分别在80℃、pH=0和pH=14的酸碱溶液中腐蚀24 h后,剩余抗弯强度分别为47.4和46.7 MPa,表现出较均衡的优异耐酸碱腐蚀性能。
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/(m^2·h·bar) can be obtained after sintering at 1180 ℃ 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 24h is 47.4MPa and 46.7MPa, respectively, showing an excellent performance in acid and alkali corrosions.