表面技术Issue(3)：116-121,6.DOI:10.16490/j.cnki.issn.1001-3660.2015.03.020
模拟海洋大气环境下Cl-质量分数对3003铝合金腐蚀行为的影响
Effect of Chloride Ion Concentration on Corrosion Behavior of 3003 Aluminum Alloy in Simulated Marine Atmospheric Environment
摘要
Abstract
ABSTRACT:Objective To study the effect of Cl-concentration on the corrosion behavior of 3003 aluminum alloy, and to provide reference for the corrosion test and service life assessment of the radiator. Methods The accelerated corrosion of 3003 aluminum al-loy in simulated marine atmospheric environment with continuous salt spray corrosion was studied, and the microstructure, element distribution, corrosion mass loss and pitting depth of corrosion products were analyzed. The electrochemical behavior of corrosion samples was studied by polarization curve and impedance technique. Results When the Cl- concentration was lower than 9%, the mass loss of the sample increased with the increase of Cl-concentration and a maximum of 7. 9937 g/m2 was achieved at a Cl-con- <br> centration of 9%;the corrosion depth increased with increasing concentration of Cl-and a peak value of 44. 15 μm was reached at a Cl- concentration of 9%;the corrosion current density increased with the increasing concentration of Cl-, while the capacitive re-actance arc radius decreased with the increase of the concentration of Cl-. When the Cl- concentration was higher than 9%, the corrosion mass loss and corrosion depth continuously decreased with the increasing Cl- concentration, the current density showed a decreasing trend, and the capacitive reactance arc radius showed an increasing trend. Conclusion When Cl- concentration was in the range of 1% ~9%, the increasing Cl-concentration could obviously accelerate the corrosion of 3003 aluminum alloy. When the Cl- concentration was higher than 9%, the corrosion rate decreased with the increasing Cl- concentration.关键词
3003铝合金/模拟海洋大气环境/加速腐蚀/Cl-质量分数Key words
3003 aluminum alloy/simulated marine atmospheric environment/accelerated corrosion/Cl- concentration分类
矿业与冶金引用本文复制引用
陈朝轶,杨京,李军旗,张湘黔..模拟海洋大气环境下Cl-质量分数对3003铝合金腐蚀行为的影响[J].表面技术,2015,(3):116-121,6.基金项目
国家自然科学基金项目(51264006) @@@@Supported by the National Natural Science Foundation of China (51264006) （51264006）
