1-羟基苯并三氮唑和钼酸钠对铜的缓蚀协同作用 |
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作者姓名: | 裴礼鸿 吴俊升 肖葵 潘晓铭 高书君 田然 李晓刚 |
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作者单位: | 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 |
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基金项目: | 国家自然科学基金资助项目;中央高校基本科研业务费专项资金资助项目 |
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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(Na2MoO4)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Na2MoO4在50mg·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Na2MoO4与铜表面作用后形成MoO3和MoO2,两种氧化物填充在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.
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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 |
收稿时间: | 2013-08-04 |
Corrosion inhibition synergistic effect of 1-hydroxybenzotriazole and sodium molybdate on copper |
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Authors: | PEI Li-hong WU Jun-sheng XIAO Kui PAN Xiao-ming GAO Shu-jun TIAN Ran LI Xiao-gang |
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Affiliation: | 1.Corrosion and Protection Center, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083 China |
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Abstract: | 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 Na2MoO4 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 Na2MoO4 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. |
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Keywords: | copper corrosion corrosion inhibition corrosion inhibitors synergistic effects polarization curves impedance contact angle |
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