CAJ | 학술논문

采用循环伏安曲线、极化曲线和交流阻抗谱研究铜经2?巯基苯并噻唑(MBT)和8?羟基喹啉(HQ)钝化处理后在3.5%NaCl溶液中的电化学行为,利用扫描电镜观察铜经缓蚀溶液处理前后在3.5%NaCl 盐水中的腐蚀形貌.结果表明,MBT或HQ在铜表面形成的络合物膜能明显改善铜在3.5%NaCl溶液中的耐蚀能力;经0.5 mmol/L MBT+0.5 mmol/L HQ复配溶液处理后,其缓蚀率达90.3%;缓蚀剂的缓蚀效果由大到小的顺序为:MBT+HQ, MBT,HQ,Blank.分析了MBT与HQ两者具有缓蚀协同作用的机理.
채용순배복안곡선、겁화곡선화교류조항보연구동경2?구기분병새서(MBT)화8?간기규람(HQ)둔화처리후재3.5%NaCl용액중적전화학행위,이용소묘전경관찰동경완식용액처리전후재3.5%NaCl 염수중적부식형모.결과표명,MBT혹HQ재동표면형성적락합물막능명현개선동재3.5%NaCl용액중적내식능력;경0.5 mmol/L MBT+0.5 mmol/L HQ복배용액처리후,기완식솔체90.3%;완식제적완식효과유대도소적순서위:MBT+HQ, MBT,HQ,Blank.분석료MBT여HQ량자구유완식협동작용적궤리.
The performance of benzotriazole(BTA) and 2-mercaptobenzothiazole(MBT) as corrosion inhibitors for copper was investigated in 3.5%NaCl solution. Potentiodynamic polarization, cyclic voltammogram and AC impedance spectroscopy were used to study the electrochemical behaviors of copper electrodes passivated by inhibitors and their complex. Corrosion morphologies of copper electrodes in 3.5%NaCl solution were observed directly by scanning electron microscopy (SEM). The results show that the complex compound films formatted by MBT or HQ on copper surface apparently increase the copper electrode anticorrosion in 3.5%NaCl solution. The anticorrosive efficiency of 0.5 mmol/LMBT+0.5 mmol/L HQ combined inhibitor is 90.3%. The anticorrosive effect order of those corrosion inhibitors is MBT+HQ>MBT>HQ>Blank. The mechanism of the synergistic effect for MBT and HQ has also been discussed in detail.