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聚乙烯吡咯烷酮对模拟混凝土孔隙液中钢筋的缓蚀效应
Authors
宋光铃
官自超
+5 more
杜荣归
王海鹏
王霞
董士刚
高颖波
Publication date
10 June 2018
Publisher
Abstract
应用电化学阻抗谱和极化曲线测试技术,结合扫描电子显微镜(SEM)、X射线光电子能谱(XPS)和拉曼(Raman)光谱分析,研究了表面活性剂聚乙烯吡咯烷酮(PVP)作为缓蚀剂对钢筋的缓蚀效应和机理.结果表明,PVP对pH值为11.0,含0.5 mol/L NaCl的模拟混凝土孔隙液中的钢筋具有良好的缓蚀作用,可有效抑制钢筋的腐蚀;PVP浓度变化对钢筋腐蚀行为有显著的影响,当浓度为25 mg/L时,PVP对钢筋的缓蚀效率达到89.1%;PVP通过在钢筋表面形成吸附膜来抑制钢筋的腐蚀.国家自然科学基金(批准号:21573182,51671163,21203158,21621091,21173177)资助~
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Last time updated on 10/06/2020