Abstract: The corrosion behavior of silicate anticorrosive brick which was made by fly ash was simulated under complex working conditions. The performance of the brick was characterized and analyzed through scanning electron microscopic, X-ray diffraction (XRD) test and mechanical compression test. The experimental results showed that the surface of the silicate anticorrosive brick was covered with a layer of complex gel layer under the high temperature-acid condition (temperature 200 ℃, 31% HCl solution). The degradation rate of strength was about 7%. Under the high temperature-acid tribo-corrosion conditions(200 ℃, rotating speed of 2 m/s), the resistance of the slurry abrasion and erosion of the brick was decreased and some defects such as corrosive pits and holes were formed locally. The compression curve showed the shape of yield step. The strength degradation rate of brick was 17.8%.
1 Vai J G. Solube silicate in industry, Little & Ives, USA, 1982. 2 Shi C J, Stegemj A. Cement and Concrete Research, 2000, 30(5), 803. 3 束德林编. 工程材料力学性能,机械工业出版社,2003. 4 Haufe K, Morrison S R. Adsorption, De Gruyter, GER, 1974. 5 张亚丁,肖世猛,等. 耐蚀非金属材料防腐及施工,化学工业出版社,2008. 6 刘道新. 材料腐蚀与防护,西北工业大学出版社,2006. 7 江东亮,李龙土,施剑林. 无机非金属材料手册,化学工业出版社,2009. 8 Reardon E J. Waste Manage, 1992,12, 221. 9 Gonzalez J A, Orero E. Magazine of Concrete Rearch, 1998,50(3), 189. 10 Atis C D, Bilim C. Construction and Building Materials, 2006, 137(3), 1656. 11 Shi C J, Stegemj A. Cement and Concrete Research, 2000, 30(5), 803. 12 Rashkeev S N. Nuclear Materials, 2014, 444, 56. 13 Glass G K. Corrosion Science, 2000, 42(2), 329. 14 Opila E J. Journal of the American Ceramic Society, 2003, 86, 238.