排水管系统中碳纤维偶接碳钢的耐蚀性能研究
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摘要
通过阳极极化曲线测试、交流阻抗测试、腐蚀失重测试等方法研究了排水管系统中碳纤维偶接碳钢的腐蚀行为及其作用机理。结果表明,偶接碳纤维后的碳钢在模拟孔隙液中的腐蚀敏感性增加,且氯离子浓度越高这种腐蚀倾向性越大;模拟孔隙液中腐蚀速率从高至低依次为:0.4%碳纤维碳钢>0.2%碳纤维碳钢>碳钢;通过控制碳纤维的添加量和降低介质中的氯离子浓度可以提高钢筋混凝土桩的耐腐蚀性能。
The corrosion behavior and mechanism of carbon fiber coupled carbon steel in drainage pipe system were studied through anodic polarization curve test, impedance test and corrosion weight-loss test. The results showed that the corrosion sensitivity of carbon steel in simulated pore solution increased after coupling carbon fiber, and the higher the concentration of chloride ion, the bigger the corrosion tendency; the corrosion rate of the simulated pore solution from high to low was 0.4% carbon fiber >0.2% carbon fiber > carbon steel; that by controlling the added amount of carbon fiber and reducing the concentration of chloride ion in the medium could improve corrosion resistance of reinforced concrete pile.
The corrosion behavior and mechanism of carbon fiber coupled carbon steel in drainage pipe system were studied through anodic polarization curve test, impedance test and corrosion weight-loss test. The results showed that the corrosion sensitivity of carbon steel in simulated pore solution increased after coupling carbon fiber, and the higher the concentration of chloride ion, the bigger the corrosion tendency; the corrosion rate of the simulated pore solution from high to low was 0.4% carbon fiber >0.2% carbon fiber > carbon steel; that by controlling the added amount of carbon fiber and reducing the concentration of chloride ion in the medium could improve corrosion resistance of reinforced concrete pile.
引文
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[2] 张世红, 刘朝, 匡飞. 紫外光下锈层光电催化性能对碳钢腐蚀行为的影响[J].腐蚀科学与防护技术, 2013, 25(3): 219—223.
[3] 马志鸣, 赵铁军,管庭. 混凝土表面硅烷处理对冻融、氯离子侵蚀后钢筋锈蚀的影响[J].材料保护, 2014, 47(8): 75—79.
[4] 苗璐. 氯离子浓度对钢筋混凝土桩中偶接碳纤维碳钢腐蚀性能的影响[J]. 铸造技术, 2014, 35(7): 1396—1398.
[5] 林德源, 杜雅莉, 陈云翔. 不同状态的钢筋在氯离子入侵过程中的腐蚀行为[J]. 腐蚀与防护, 2014, 35(10): 982—986.
[6] 段楚枫. 外加应力条件下混凝土中钢筋的腐蚀行为研究[J].材料开发与应用,2018,33(03):82—86.
[7] 李国明, 常万顺, 陈学群. 碳钢和低合金钢模拟坑孔腐蚀试验方法研究[J].材料开发与应用, 2008,23 (03): 40—42,56.