摘要
采用交流阻抗法研究了复合缓蚀剂中各组分的缓蚀机理，结果表明亚硝酸盐是阳极型钝化膜型缓蚀剂；硅酸盐是混合型沉淀膜型缓蚀剂；有机铵盐则是吸附膜型缓蚀剂，三组分复合后有增效作用。钢筋／砂浆的交流阻抗结果还表明，三元复合缓蚀剂的加入能改善水泥砂浆的微观结构，降低其孔隙率。
A. C. impendace technique was used to investigate the corrosion inhibition and mechanism of inhibitors for rebar in simulated pole solution and mortar. The results show that among the composite inhibitors, NaNO 2 is an anodic inhibitor; silicate only deposits on the surface of the rebar passive film; organic ammonium improves the passive film by competing with Cl -. When added in certain ratio, their combined effect is found to be very effective. A.C. impedance also shows that the pore rate of mortar is reduced by adding composite inhibitors.
出处
《南京化工大学学报》
1998年第2期53-57,共5页
Journal of Nanjing University of Chemical Technology(Natural Science Edition)
基金
江苏省自然科学基金
关键词
复合缓蚀剂
砂浆
孔隙率
混凝土
钢筋
缓蚀剂
A.C. impedance\ composite inhibitors\ inhibition mechanism\ mortar\ pore rate
