硅酸盐通报2024，Vol.43Issue(1)：121-127,7.
不同镁铝比LDHs对钢筋阻锈性能的影响
Effect of LDHs with Different Mg/Al Ratios on Corrosion Resistance of Steel Bar
摘要
Abstract
In order to investigate the influences of Mg/Al ratios on crystal structure,anion controlled release ability and rust inhibition effect of MgAl-layered bimetallic hydroxides(MgAl-LDHs),MgAl-LDHs with Mg/Al molar ratios of 2∶1,3∶1 and 4∶1 were synthesized by co-precipitation method.The phase composition of the synthesized samples was analyzed by XRD and FTIR.The chloride ion adsorption performance of the synthesized samples and their corrosion inhibition effect on steel bar in simulated concrete pore solution were studied by chloride ion adsorption and electrochemical experiments.The results show that with the increase of Mg/Al molar ratios from 2∶1 to 4∶1,the interlayer spacing of LDHs decreases from 0.888 nm to 0.796 nm,resulting in a decrease in the number of LDHs loaded anions and a decrease in chloride ion adsorption capacity.The critical chloride ion concentrations of Mg2Al-NO3-,Mg3Al-NO3-and Mg4Al-NO3-doped groups are 0.16,0.14 and 0.14 mol/L,respectively,which are 60％,40％and 40％higher than that of the blank group(0.10 mol/L).关键词
镁铝比/LDHs/腐蚀/氯离子/层间距/吸附性能Key words
Mg/Al ratio/LDHs/corrosion/chloride ion/interlayer spacing/adsorption capacity分类
建筑与水利引用本文复制引用
易钰奇,李静,韦柳媚,田浩,庄恩德,黎雪杰..不同镁铝比LDHs对钢筋阻锈性能的影响[J].硅酸盐通报,2024,43(1):121-127,7.基金项目
广西壮族自治区大学生创新创业训练计划(202110593288) （202110593288）
