采用失重测试、形貌观察、成分分析和电化学实验对放置在吐鲁番干热大气环境下3年的纯铜进行大气腐蚀研究。结果显示，平均失重速率为2.90μm/a，远低于处在海洋环境下的腐蚀速率；铜的大气腐蚀产物主要由Cu2O 和 Cu2Cl(OH)3组成，而由于干湿和冷热循环，腐蚀产物分布不均匀；电化学实验表明，腐蚀产物的存在能阻止腐蚀的进一步发生，但是产物的不均匀分布会在一定程度上加速腐蚀的进程。
The atmospheric corrosion behavior of pure copper exposed for three years in Turpan, China, which is a typical hot and dry atmosphere environment, was investigated using mass-loss tests, morphology observations, composition analyses, and electrochemical techniques. The results indicated that the annual corrosion rate of pure copper was approximately 2.90 μm/a. An uneven distribution of corrosion products was observed by scanning electron microscopy; this uneven distribution was attributed to the dehydration process during wet–dry and cold–hot cycles, and the compositions mainly consisted of cuprite (Cu2O) and atacamite (Cu2Cl(OH)3). Electrochemical measurements showed that deposits on copper improved its resistance to corrosion and the protectiveness decreased with increasing temperature. On the other hand, results obtained using the scanning vibrating electrode technique showed that the porous and uneven structure of the deposit layer generated a spatial separation of cathodic and anodic reaction sites, which accelerated the corrosion process in wet and rainy weather.
参考文献
| [1] | M.Morcillo;E. Almeida;M. Marrocos.Atmospheric Corrosion of Copper in Ibero-America[J].Corrosion: The Journal of Science and Engineering,200111(11):967-980. |
| [2] | I.T.E. Fonseca;R. Picciochi;M.H. Mendonca;A.C. Ramos.The atmospheric corrosion of copper at two sites in Portugal: a comparative study[J].Corrosion Science,20043(3):547-561. |
| [3] | K. P. FitzGerald;J. Nairn;G. Skennerton;A. Atrens.Atmospheric corrosion of copper and the colour, structure and composition of natural patinas on copper[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,20069(9):2480-2509. |
| [4] | Piccardo, P.;M?dlinger, M.;Ghiara, G.;Campodonico, S.;Bongiorno, V..Investigation on a "tentacle-like" corrosion feature on Bronze Age tin-bronze objects[J].Applied physics, A. Materials science & processing,20134(4):1039-1047. |
| [5] | 李慧艳;方月华;肖葵;何刚;郭春云;董超芳;李晓刚.干热大气环境中涂层材料失效行为研究进展[J].科技导报,2012(34):76-79. |
| [6] | Zhongyu Cui;Xiaogang Li;Kui Xiao;Chaofang Dong.Atmospheric corrosion of field-exposed AZ31 magnesium in a tropical marine environment[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2013Nov.(Nov.):243-256. |
| [7] | 崔中雨;肖葵;董超芳;丁源;王涛;李晓刚.西沙严酷海洋大气环境下紫铜和黄铜的腐蚀行为[J].中国有色金属学报,2013(3):742-749. |
| [8] | E. Cano;C. L. Torres;J. M. Bastidas.An XPS study of copper corrosion originate by formic acid vapour at 40% and 80% relative humidity[J].Materials and Corrosion,20019(9):667-676. |
| [9] | Mezzi, A.;Angelini, E.;De Caro, T.;Grassini, S.;Faraldi, F.;Riccucci, C.;Ingo, G.M..Investigation of the benzotriazole inhibition mechanism of bronze disease[J].Surface and Interface Analysis: SIA: An International Journal Devoted to the Development and Application of Techniques for the Analysis of Surfaces, Interfaces and Thin Films,20128(8):968-971. |
| [10] | J. L. Crolet;N. Thevenot;S. Nesic.Role of conductive corrosion products in the protectiveness of corrosion layers[J].Corrosion: The Journal of Science and Engineering,19983(3):194-203. |
| [11] | Vladimir Kucera;Johan Tidblad;Katerina Kreislova.UN/ECE ICP Materials Dose-response Functions for the Multi-pollutant Situation[J].Water, Air and Soil Pollution: Focus.,20071/3(1/3):249-258. |
| [12] | Odnevall I.;Leygraf C..ATMOSPHERIC CORROSION OF COPPER IN A RURAL ATMOSPHERE[J].Journal of the Electrochemical Society,199511(11):3682-3689. |
| [13] | J. Wang;Z.Y. Wang;W. Ke.A study of the evolution of rust on weathering steel submitted to the Qinghai salt lake atmospheric corrosion[J].Materials Chemistry and Physics,20131(1):225-232. |
| [14] | Hideki Katayama;Seiji Kuroda.Long-term atmospheric corrosion properties of thermally sprayed Zn, Al and Zn-Al coatings exposed in a coastal area[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2013Nov.(Nov.):35-41. |
| [15] | G.Z. Meng;C. Zhang;Y.F. Cheng;C;Zhang;Y;F;Cheng.Effects Of Corrosion Product Deposit On The Subsequent Cathodic And Anodic Reactions Of X-70 Steel In Near-neutral Ph Solution[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,200811(11):3116-3122. |
| [16] | 董超芳;生海;安英辉;李晓刚;肖葵.Cl-作用下2A12铝合金在大气环境中腐蚀初期的微区电化学行为[J].北京科技大学学报,2009(7):878-883. |
| [17] | 董超芳;安英辉;李晓刚;生海;肖葵.7A04铝合金在海洋大气环境中初期腐蚀的电化学特性[J].中国有色金属学报,2009(2):346-352. |
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