表面沉积有SO2污染物的黄铜在大气中的腐蚀行为
Corrosion Behavior of Brass with SO2 Pollutants Deposited on Surface in Atmosphere
摘 要
采用电化学阻抗谱（EIS）、扫描Kelvin探针（SKP）等方法研究了沉积有SO2污染物的黄铜电极在大气中的腐蚀行为，采用X射线衍射（XRD）分析了黄铜表面的腐蚀产物。结果表明：表面沉积有SO2污染物的黄铜电极的腐蚀反应阻力明显小于表面无污染物的黄铜电极的，且表面沉积SO2污染物的量越大，腐蚀反应阻力越小；随着腐蚀时间的延长，黄铜电极表面腐蚀产物增加，表面伏打电位升高，表面反应活性降低；表面沉积有SO2的黄铜在大气环境中的腐蚀产物主要为ZnSO4·7H2O、CuSO4·3H2O及ZnO，另外还有少量的Zn（OH）2、Cu（OH）2和CuO。
扫描Kelvin探针(SKP)
黄铜
大气腐蚀
SO2
electrochemical impedance spectroscopy (EIS)
scanning Kelvin probe (SKP)
brass
atmospheri ccorrosion
SO2
Abstract
The corrosion behavior of brass with SO2 pollutants deposited on surface in atmospheric environment was investigated by electrochemical impedance spectroscopy (EIS) and scanning Kelvin probe (SKP) techniques. The corrosion products were characterized by XRD. The results showed that the corrosion resistance of brass with SO2 pollutants deposited on surface was much smaller than that without surface deposition of SO2 pollutants. The more the surface deposition of pollutants SO2, the smaller the corrosion resistance. With the extension of corrosion time, more and more corrosion products were produced on the surface of brass. The surface Volta potential shifted positively and the activity of corrosion reaction reduced. The main components of corrosion products of brass were ZnSO4·7H2O, CuSO4·3H2O, ZnO, and a small amount of Zn(OH)2, Cu(OH)2 and CuO.
中图分类号 TG172 DOI 10.11973/fsyfh-201701001
所属栏目 试验研究
基金项目 国家自然科学基金项目（51471104）；上海市科委项目（14DZ2261000，11DZ2210500）；上海市教委科创重点项目（12ZZ173）
收稿日期 2015/9/2
修改稿日期
网络出版日期
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引用该论文: JIANG Yi-kui,GE Hong-hua,XUE Hui,YUAN Qun,MENG Xin-jing,ZHAO Yu-zeng,LIAO Qiang-qiang. Corrosion Behavior of Brass with SO2 Pollutants Deposited on Surface in Atmosphere[J]. Corrosion & Protection, 2017, 38(1): 1
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参考文献
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【2】MELCHERS R E. Bi-modal trends in the long-term corrosion of copper and high copper alloys[J]. Corrosion Science,2015,95:51-61.
【3】吴军,周贤良,董超芳,等. 铜及铜合金大气腐蚀研究进展[J]. 腐蚀科学与防护技术,2010,22(5):464-468.
【4】王秀通,王丽媛,孙好芬,等. SO2与NaCl对铜大气腐蚀的影响[J]. 材料保护,2011,44(9):28-31.
【5】任汉涛,银朝晖,王平,等. 电网铜材在含H2S大气中的腐蚀研究现状[J]. 腐蚀与防护,2014,35(11):1074-1077.
【6】王振尧,汪川,张春基,等. 白铜和黄铜在SO2气氛中的腐蚀对比[J]. 装备环境工程,2006,3(5):16-20.
【7】陈杰,郑弃非,温军国. 铜及铜合金大气腐蚀影响因素的灰色关联分析[J]. 腐蚀与防护,2010,31(12):917-922.
【8】OESCH S,FALLER M. Environmental effects on materials:the effect of the air pollutants SO2, NO2, NO and O3 on the corrosion of copper,zinc and aluminium. A short literature survey and results of laboratory exposures[J]. Corrosion Science,1997,39(9):1505-1530.
【9】郭军科,卢立秋,宋卓,等. 含微量H2S大气对紫铜的腐蚀研究[J]. 河北电力技术,2012,31(3):35-37.
【10】王志武, 原素芳. 黄铜腐蚀速度与Cl-浓度的关系[J]. 材料保护,2004,37(10):50-51.
【11】黄桂桥. 铜合金在海洋飞溅区的腐蚀[J]. 中国腐蚀与防护学报,2005,25(2):65-69.
【12】RAVICHANDRAN R,RAJENDRAN N. Influence of benzotriazole derivatives on the dezincification of 65-35 brass in sodium chloride[J]. Applied Surface Science,2005,239:182-192.
【13】VALCARCE M B,SÁNCHEZ S R D,VÁZQUEZ M. Brass dezincification in a tap water bacterial suspension[J]. Electrochimica Acta,2006,51(18):3736-3742.
【14】RAVICHANDRAN R,NANJUNDAN S,RAJENDRAn N. Effect of benzotriazole derivatives on the corrosion and dezincification of brass in neutral chloride solution[J]. Journal of Applied Electrochemistry,2004,34(11):1171-1176.
【15】吴军,李晓刚,董超芳,等. 紫铜T2和黄铜H62在热带海洋大气环境中早期腐蚀行为[J]. 中国腐蚀与防护学报,2012(1):70-74.
【16】WALLINDER I O,ZHANG X,GOIDANICH S,et al. Corrosion and runoff rates of Cu and three Cu-alloys in marine environments with increasing chloride deposition rate[J]. Science of the Total Environment,2014,472:681-694.
【17】陈文娟,郝龙,董俊华,等. 模拟工业-海岸大气中SO2对Q235B钢腐蚀行为的影响[J]. 金属学报,2014,50(7):802-810.
【18】原徐杰,张俊喜,季献武,等. 电力输电杆塔用镀锌钢在污染环境中的腐蚀行为研究[J]. 腐蚀科学与防护技术,2013,25(1):13-18.
【19】周和荣,李晓刚,董超芳,等. 铝合金在NaHSO3溶液中干湿周浸腐蚀行为[J]. 中国腐蚀与防护学报,2008,28(6):345-350.
【20】LIU Y,WANG Z,KE W. Study on influence of native oxide and corrosion products on atmospheric corrosion of pure Al[J]. Corrosion Science,2014,80(3):169-176.
【21】LIAO X,CAO F,ZHENG L,et al. Corrosion behaviour of copper under chloride-containing thin electrolyte layer[J]. Corrosion Science,2011,53(10):3289-3298.
【22】REDDY B,SYKES J M. Degradation of organic coatings in a corrosive environment:a study by scanning Kelvin probe and scanning acoustic microscope[J]. Progress in Organic Coatings,2005,52(4):280-287.
【23】WILLIAMS G,MCMURRAY H N,NEWMAN R C. Surface oxide reduction by hydrogen permeation through iron foil detected using a scanning Kelvin probe[J]. Electrochemistry Communications,2013,27(1):144-147.
【24】MORETO J A,MARINO C E B,FILHO W W B,et al. SVET,SKP and EIS study of the corrosion behaviour of high strength Al and Al-Li alloys used in aircraft fabrication[J]. Corrosion Science,2014,84(3):30-41.
【25】MELITZ W,SHEN J,KUMMEL A C,et al. Kelvin probe force microscopy and its application[J]. Surface Science Reports,2011,66(1):1-27.
【26】FU A Q,CHENG Y F. Characterization of corrosion of X65 pipeline steel under disbonded coating by scanning Kelvin probe[J]. Corrosion Science,2009,51(4):914-920.
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