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Cr合金化对HRB400钢筋腐蚀行为的研究
Authors
刘广华
刘明
+4 more
庞靖宇
朱言晨
李晓刚
程学群
Publication date
1 January 2015
Publisher
Abstract
应用动电位极化、电化学阻抗谱、周浸腐蚀实验的方法研究了HRB400普通碳钢钢筋和两种Cr合金化的低合金钢筋在2%Na Cl溶液中的腐蚀行为。结果表明:相比HRB400钢筋,Cr合金化的钢筋的开路电位明显正移,Cr加入提高了钢的热力学稳定性;随着Cr含量的增加,钢筋的自腐蚀电流密度减小,极化电阻增大,Cr合金化的钢筋具有相对较小的电化学腐蚀速率;周浸加速腐蚀72 h后,HRB400钢筋以均匀腐蚀为主,Cr合金化的钢筋以局部腐蚀为主,添加Cr可以显著降低HRB400钢筋的均匀腐蚀速率
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Last time updated on 22/01/2018