摘要
为研究纳米二氧化硅(NS)改性磷酸镁水泥(MPC)涂层的抗盐雾腐蚀能力,通过抗压、抗折强度试验得到NS对MPC胶砂的力学影响规律,对改性后的MPC涂层进行了盐雾试验,并利用SEM和XRD试验分析改性MPC的微观结构、物相组成。研究结果表明:NS可以提高MPC胶砂的力学性能,最佳NS掺入质量比为2%;通过微观分析可知,NS在MPC胶砂中具有良好的孔隙填充效果;改性MPC具有良好的抗盐雾腐蚀能力,作为涂层可以显著提高钢材的耐腐蚀能力。
To study the salt spray corrosion resistance of nano-silica(NS)modified magnesium phosphate cement(MPC)coatings,the mechanical influence law of NS on MPC mortar was obtained through compressive and flexural strength tests.Salt spray tests were conducted on the modified MPC coatings,and the microstructure and phase composition of the modified MPC were analyzed by SEM and XRD tests.The results indicate that NS enhances the mechanical properties of MPC mortar,with the optimal NS dosage being 2%by mass.Microscopic analysis shows that NS provides excellent pore-filling effect in MPC mortar.The modified MPC mortar demonstrates good resistance to salt spray corrosion,significantly improving the corrosion resistance of steel when used as a coating.
作者
王凡旭
周乐
赵同峰
李磊
WANG Fanxu;ZHOU Le;ZHAO Tongfeng;LI Lei(School of Architecture and Civil Engineering,Shenyang University,Shenyang 110044,China;Shenyang Engineering Structure Safety Assessment and Prevention Laboratory,Shenyang University,Shenyang 110044,China;Department of Road and Bridge Engineering,Liaoning Transportation College,Shenyang 110122,China)
出处
《沈阳大学学报(自然科学版)》
2025年第5期421-427,F0003,共8页
Journal of Shenyang University(Natural Science)
基金
沈阳市工程结构安全评估与防控实验室项目(S230184)。
关键词
纳米二氧化硅
磷酸镁水泥
强度
盐雾腐蚀
微观测试
nano-silica
magnesium phosphate cement
strength
salt spray corrosion
microscopic testing
