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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.
Electrochemical, scanning electron microscopy and X-ray photoelectron spectroscopy (EIS) were used to investigate the effect of copper on the corrosion behavior of copper in ASTM D 1384 simulated atmospheric solution after mixing with 1-hydroxybenzotriazole (BTAOH) and sodium molybdate .The results of electrochemical experiments showed that BTAOH and Na2MoO4 can significantly increase the charge transfer of Cu in simulated atmospheric solution under the concentration of 50 mg · L-1 Resistance and corrosion current density are reduced, and the corrosion inhibition rate reaches 90.7%. The corrosion products of copper in the simulated atmospheric corrosion solution accumulate on the surface of the columnar aggregates, while in the solution containing the corrosion inhibitor, the surface is dense and dense, and the hydrophobicity is enhanced. X-ray photoelectron spectroscopy results show that the formation of MoO3 and Mo O2 after the reaction of Na2Mo O4 with the copper surface, the two oxides filled in the gap formed by the BTAOH surface film to improve the membrane densification , Have a good protective effect on copper.