通过干湿循环加速试验模拟Al表面沉积沙漠浮土情况下的大气腐蚀过程,利用失重分析、扫描电镜(SEM)和大气腐蚀监测仪(ACM)研究浮土中可溶性盐对Al的大气腐蚀的影响.结果表明:浮土中的可溶性盐会使发生大气腐蚀的相对湿度范围变宽,随着可溶性盐含量的提高,Al的腐蚀不断恶化.在可溶性盐成分中,MgCl_2对Al的腐蚀影响最大,NaCl次之,MgSO_4和Na_2SO_4的影响较小.
Atmospheric corrosion of aluminium deposited with desert dust was simulated using a laboratoryaccelerated test of cyclic wet-dry.Effects of the soluble salts in desert dust on atmospheric corrosion of aluminium were studied through mass loss,scanning electron microscope(SEM)and atmosphere corrosion monitor (ACM).The results demonstrated that the soluble salts in dust Can widen the scope of relative humidity in which atmospheric corrosion occurs.Atmospheric corrosion of aluminium Was getting more seriously with the increasing of the salt content in desert dust.MgCl_2 in desert dust had the strongest influence on atmospheric corrosion of aluminium,then did NaCl,MgSO_4 and Na_2SO_4 had the smaller influence.
参考文献
| [1] | M. Natesan;G. Venkatachari;N. Palaniswamy .Kinetics of atmospheric corrosion of mild steel, zinc, galvanized iron and aluminium at 10 exposure stations in India[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2006(11):3584-3608. |
| [2] | 朱红嫚,郑弃非,谢水生.万宁地区铝及铝合金不同距海点的大气腐蚀研究[J].稀有金属,2002(06):456-459. |
| [3] | 王振尧,于国才,韩薇.3种有色金属在沈阳地区的大气腐蚀规律[J].中国有色金属学报,2003(02):367-372. |
| [4] | 萧以德,王光雍,李晓刚,林安,张三平,秦晓洲,王振尧,梁彩凤,郑弃非,毛海荣.我国西部地区大气环境腐蚀性及材料腐蚀特征[J].中国腐蚀与防护学报,2003(04):248-255. |
| [5] | D. Bengtsson Bluecher;J.-E. Svensson;L.-G. Johansson .The influence of CO_2, AlCl_3 · 6H_2O, MgCl_2 · 6H_2O, Na_2SO_4 and NaCl on the atmospheric corrosion of aluminum[J].Corrosion Science: The Journal on Environmental Degradation of Materials and its Control,2006(7):1848-1866. |
| [6] | D. Bengtsson Blucher;R. Lindstrom;J-E. Svensson .The Effect of CO_2 on the NaCl-Induced Atmospheric Corrosion of Aluminum[J].Journal of the Electrochemical Society,2001(4):B127-B131. |
| [7] | 万晔,任延杰,严川伟.两种盐沉积对LY12铝合金大气腐蚀行为的影响[J].中国有色金属学报,2004(07):1149-1155. |
| [8] | 王佳.无机盐微粒沉积和大气腐蚀的发生与发展[J].中国腐蚀与防护学报,2004(03):155-158. |
| [9] | Rosa Vera;Diana Delgado;Blanca M. Rosales .Effect of atmospheric pollutants on the corrosion of high power electrical conductors: Part 1. Aluminium and AA6201 alloy[J].Corrosion Science,2006(10):2882-2900. |
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