1-羟基苯并三氮唑和钼酸钠对铜的缓蚀协同作用  

Corrosion inhibition synergistic effect of 1- hydroxybenzotriazole and sodium molybdate on copper

作　　者：裴礼鸿[1] 吴俊升[1] 肖葵[1] 潘晓铭[1] 高书君[1] 田然[1] 李晓刚[1] 

机构地区：[1]北京科技大学新材料技术研究院腐蚀与防护中心,北京100083

出　　处：《北京科技大学学报》2014年第11期1520-1526,共7页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(50701006;51271031);中央高校基本科研业务费专项资金资助项目(FRF-SD-12-027A)

摘　　要：采用电化学、扫描电子显微镜、X射线光电子能谱等实验方法研究了1-羟基苯并三氮唑(BTAOH)和钼酸钠(Na2Mo O4)复配后对铜在ASTM D 1384模拟大气腐蚀溶液中的缓蚀协同作用.电化学实验结果表明:BTAOH与Na2Mo O4在50 mg·L-1的质量浓度条件下,以2∶1复配使用能够显著提高铜在模拟大气腐蚀溶液中的电荷转移电阻,降低腐蚀电流密度,缓蚀率达到90.7%;铜在模拟大气腐蚀溶液中的腐蚀产物呈聚集柱状堆砌在表面,而在含有缓蚀剂的溶液中表面平整致密,且疏水性增强,接触角显著增大至91.8°.X射线光电子能谱结果显示Na2Mo O4与铜表面作用后形成Mo O3和Mo O2,两种氧化物填充在BTAOH形成的表面膜的缝隙中,提高了膜的致密性,对铜产生良好的保护作用.A synergistic effect of 1- hydroxybenzotriazole and sodium molybdate as corrosion inhibitors on copper in ASTM D 1384 simulated atmospheric corrosion solution was investigated by using electrochemistry, scanning electron microscopy （SEM）, and X-ray photoelectron spectroscopy （XPS）. Electrochemistry results revealed that BTAOH and Na2 MoO4 compounding in 2 to 1, under the condition of a 50 mg×L - 1 concentration, could improve the charge transfer resistance and reduce the corrosion current density, and the inhibition rate significantly reached to 90. 7% . Corrosion products of copper in this simulated atmospheric corrosion solution piled up on the copper surface in an accumulative column shape; but the copper surface was smooth and dense in the corrosion inhibitor containing media, the hydrophobicity enhanced, and the surface contact angle significantly increased to 91. 8°. X-ray photoelectron spectroscopy （XPS） results showed that Na2 MoO4 transformed into MoO3 and MoO2 after interaction with copper, and two kinds of oxides padded in the gap of a surface film formed by BTAOH, which increased the density of the film and had good protective effect on copper.

关 键 词：铜腐蚀 腐蚀抑制 缓蚀剂 协同作用 极化曲线 阻抗 接触角 

分 类 号：TG174.42[金属学及工艺—金属表面处理] TG146.11[金属学及工艺—金属学]