CAJ | 학술논문

用含水量不同的正十四烷基膦酸(TDPA)/乙醇?水混合溶液在2024铝合金表面制备TDPA自组装膜。采用动电位扫描、电化学交流阻抗(EIS)、傅里叶红外(FTIR)、俄歇能谱(AES)以及原子力显微镜(AFM)等手段，研究自组装膜在0.1 mol/L硫酸溶液中对铝合金的吸附及缓蚀性能的影响。傅里叶红外以及俄歇能谱测试结果表明：TDPA分子成功吸附于合金表面，且吸附密度随着溶液中水含量的增加而增加。电化学测试以及腐蚀形貌观察结果表明：4h 的自组装能够获得最佳缓蚀效率；自组装溶液中水含量越高，得到的自组装膜缓蚀性能越好；自组装溶液中水对自组装膜性能的影响与金属表面的水化反应有关。
용함수량불동적정십사완기련산(TDPA)/을순?수혼합용액재2024려합금표면제비TDPA자조장막。채용동전위소묘、전화학교류조항(EIS)、부리협홍외(FTIR)、아헐능보(AES)이급원자력현미경(AFM)등수단，연구자조장막재0.1 mol/L류산용액중대려합금적흡부급완식성능적영향。부리협홍외이급아헐능보측시결과표명：TDPA분자성공흡부우합금표면，차흡부밀도수착용액중수함량적증가이증가。전화학측시이급부식형모관찰결과표명：4h 적자조장능구획득최가완식효솔；자조장용액중수함량월고，득도적자조장막완식성능월호；자조장용액중수대자조장막성능적영향여금속표면적수화반응유관。
Self assembled monolayers (SAMs) of 1-tetradecylphosphonic acids (TDPA, CH3(CH2)13P(O)(OH)2 ) were formed on the 2024 aluminum alloy surface in TDPA-containing ethanol?water solutions with different water content. The adsorption and corrosion protection properties of the SAMs for 2024 alloy in 0.1 mol/L H2SO4 solution were examined and characterized by potentiodynamic polarization, electrochemical impedance spectrum (EIS), Fourier transformed infrared spectroscopy (FTIR), Auger electron spectra (AES) and atomic force microscopy (AFM). FTIR and AES results show that the TDPA molecules were successfully adsorbed on the 2024 aluminum alloy surface, and the density of the SAMs increased with the increasing water content in the assembly solution. The results of electrochemical studies and corrosion morphologies observed by AFM show that a 4 h modification resulted in maximal inhibition efficiency,and the higher the water content in the assembly solution is, the better the inhibition performance of the SAMs can be achieved. The effect of water content in TDPA solutions on the performance of the SAMs is related to the hydration reaction of the metal surface.