采用开路电位、电化学极化曲线、电化学阻抗谱(EIS)研究了紫铜在海水盐度和微生物影响下的腐蚀行为.结果表明,无菌介质条件下,随着介质盐度的增加,紫铜的开路电位负移,使得腐蚀倾向与腐蚀率变大.扫描电子显微镜(SEM)形貌分析表明在紫铜上附着的海洋微生物以杆状细菌为主,咸淡水中的细菌附着量比海水的大,导致紫铜在盐度不高的咸淡水耐蚀性能下降.EIS结果表明在海洋微生物作用下紫铜的交流阻抗模值减少,降低了紫铜的极化电阻和表面膜的电阻,从而加速了紫铜的腐蚀进程.
参考文献
| [1] | NAKAYAMA S .Mechanistic study by electrochemical impedance spectroscopy on reduction of copper oxides in neutral solutions[J].SEI Technical Review,2009,1343 |
| [2] | TSAI T H,WU Y F,YEN S C .A study of copper chemical mechanical polishing in urea-hydrogen peroxide slurry by electrochemical impedance spectroscopy[J].Applied Surface Science,2003,214:120-135.,2003. |
| [3] | 王宏智,陈君,周建奇,姚素薇,张卫国.紫铜海水管焊接部位在海水中的腐蚀特征[J].中国有色金属学报,2006(04):645-650. |
| [4] | CLAYTOR R.Investigation to the Susceptibility of Corrosion Resistant Alloys to Biocorrosion[M].USA:Naval Research Laboratory,2004:36-48.,2004. |
| [5] | SZAKALOS P .Corrosion of copper by water[J].Electrochemicaland Solid State Letters,2007,10(11):63-67.,2007. |
| [6] | SANDBERG J .Corrosion-induced copper runoff from naturally and pre-patinated copper in a marine environment[J].Corrosion Science,2006,48(12):4316-4338.,2006. |
| [7] | 范工业.防止铜合金热交换器腐蚀的技术改进[J].全面腐蚀控制,2006(05):43-44,42. |
| [8] | 姜英,王卫国,郭红.同步改善黄铜H68晶界腐蚀行为和力学性能[J].中国有色金属学报,2011(02):377-383. |
| [9] | 段冶,李松梅,杜娟,刘建华.Q235钢在假单胞菌和铁细菌混合作用下的腐蚀行为[J].物理化学学报,2010(12):3203-3211. |
| [10] | SHENG Xiao-xia .Evaluation of an organic corrosion inhibitor on abiotic corrosion and microbiologically influenced corrosion ofmild steel[J].Industrial and Engineering Chemistry Research,2007,46(22):7117-7125.,2007. |
| [11] | LEE A K,BUEHLER M G,NEWMAN D K .Influence of a dual-species biofilm on the corrosion of mild steel[J].Corros Sci,2006,48 |
| [12] | YUAN S J,PEHKONEN S O .Microbiologically influenced corrosion of 304 stainless steel by aerobic pseudomonas NCIMB2021 bacteria:AFM and XPS study[J].Collids and Surfaces B:Bionterfaces,2007,59(1):87-99.,2007. |
| [13] | ABRAHAM G J,KAIN V,DEY G K .MIC failure of cupronickel condenser tube in fresh water application[J].Engineering Failure Analysis,2009,16(3):934-943.,2009. |
| [14] | 孙秋霞.材料腐蚀与防护[M].北京:冶金工业出版社,2001.34-59.,2001. |
| [15] | 曹楚南,张鉴清.电化学阻抗谱导论[M].北京:科学出版社,2002.7.,2002. |
| [16] | IWONA B B,Corrosion of technical materials in the presence ofbiofilms current understanding and state-of-the-art methods ofstudy[J].InternBiodeter Biodegrad,2004,53 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%