Q235碳钢在宜宾不同大气环境中的腐蚀行为
Corrosion Behavior of Q235 Carbon Steel in Different Atmosphere Environments in Yibin
摘 要
通过室外暴露试验和电化学测试,研究了电网设备主要金属材料Q235碳钢在四川宜宾地区不同大气环境中的腐蚀行为。结果表明:在四川宜宾A、B、C三个变电站环境中,Q235碳钢的平均腐蚀速率分别为19.68μm/a、41.40μm/a和28.75μm/a,其表面腐蚀产物主要由α-FeOOH、γ-FeOOH和Fe3O4组成,在B和C变电站环境中,Q235碳钢表面腐蚀产物中的α-FeOOH含量较高;在B变电站环境中,Q235碳钢的腐蚀电流密度最大,膜层电阻最小,说明其表面锈层对基体的保护性能较差。
Q235碳钢
大气腐蚀
电化学测试
power transmission and transformation equipment
Q235 carbon steel
atmospheric corrosion
electrochemical test
Abstract
Through outdoor exposure test and electrochemical test, the corrosion behavior of Q235 carbon steel, the main metal material of power grid equipment, in different atmospheric environments in Yibin, Sichuan Province was studied. The results showed that the average corrosion rates of Q235 carbon steel in the environments of A, B and C substations were 19.68 μm/a, 41.40 μm/a and 28.75 μm/a, respectively. The corrosion products on the surface of Q235 carbon steel were mainly composed of α-FeOOH, γ-FeOOH and Fe3O4. The content of α-FeOOH on the surface of Q235 carbon steel in the environment of B and C substations was relatively high. In B substation environment, the corrosion current density of Q235 carbon steel was the highest and the film resistance was the lowest, which showed that the surface rust layer had poor protection performance for the substrate.
中图分类号 TG174 DOI 10.11973/fsyfh-202212002
所属栏目 腐蚀电化学基础、技术与运用
基金项目 国家科技基础资源调查专项(2021FY100600);国网四川省电力公司科技项目(521997160013,521997200030)
收稿日期 2022/4/6
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联系人作者杜翠薇(dcw@ustb.edu.cn)
引用该论文: LI Chengxin,WANG Zhigao,HAI Chao,WANG Fangqiang,PANG Yajie,SHI Jianguo,YAN Jun,JIANG Yiqiang,DU Cuiwei,LI Xiaogang. Corrosion Behavior of Q235 Carbon Steel in Different Atmosphere Environments in Yibin[J]. Corrosion & Protection, 2022, 43(12): 6
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参考文献
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【2】王志高,田倩倩,耿植,等. 四川电网输变电设备的腐蚀情况调查及防护措施[J]. 腐蚀与防护,2021,42(3):34-37.
【3】夏晓健,金焱,乔汉文,等. 输变电设备腐蚀状况调查与分析[J]. 腐蚀科学与防护技术,2019,31(2):121-127.
【4】梁彩凤,侯文泰. 环境因素对钢的大气腐蚀的影响[J]. 中国腐蚀与防护学报,1998,18(1):1-6.
【5】HAI C,WANG Z G,LU F Y,et al. Analysis of corrosion evolution in carbon steel in the subtropical atmospheric environment of Sichuan[J]. Journal of Materials Engineering and Performance,2021,30(11):8014-8022.
【6】汪川,曹公旺,潘辰,等. 碳钢、耐候钢在3种典型大气环境中的腐蚀规律研究[J]. 中国腐蚀与防护学报,2016,36(1):39-46.
【7】曹公望,刘雨薇,张丹丹,等. Q235和Q345钢在红沿河大气环境中的腐蚀行为[J]. 腐蚀与防护,2018,39(1):24-28,34.
【8】CHENG X Q,JIN Z,LIU M,et al. Optimizing the nickel content in weathering steels to enhance their corrosion resistance in acidic atmospheres[J]. Corrosion Science,2017,115:135-142.
【9】WU W,CHENG X Q,HOU H X,et al. Insight into the product film formed on Ni-advanced weathering steel in a tropical marine atmosphere[J]. Applied Surface Science,2018,436:80-89.
【10】郑莹莹,邹妍,王佳. 海洋环境中锈层下碳钢腐蚀行为的研究进展[J]. 腐蚀科学与防护技术,2011,23(1):93-98.
【11】李晓刚,李清,裴梓博,等. 钢铁大气腐蚀监测技术研究进展[J]. 鞍钢技术,2020(6):1-8.
【12】潘玉霞,王玫,王志高,等. 大气腐蚀环境对四川电网输变电设备腐蚀的影响研究[J]. 材料保护,2018,51(4):110-113,129.
【13】SAEEDI M,DANESHVAR S,KARBASSI A R. Role of riverine sediment and particulate matter in adsorption of heavy metals[J]. International Journal of Environmental Science & Technology,2004,1(2):135-140.
【14】张晓云,蔡健平,马颐军,等. 耐候钢和碳钢大气腐蚀规律分析[J]. 腐蚀科学与防护技术,2004,16(6):389-391.
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