硫醇-膦酸混合自组装膜对2024铝合金腐蚀性能的影响
Corrosion Inhibition Effect of Thiol-phosphonic Acid Mixed Self-assembled Monolayers on 2024 Aluminum Alloy
摘 要
以十四烷基硫醇(TDT)和十四烷基膦酸(TDPA)为缓蚀分子, 含水量不同的乙醇-水混合液作为溶剂, 配制TDT, TDPA以及TDT/ TDPA混合自组装液, 并用浸泡法在2024铝合金表面制备得到自组装膜(SAMs)。采用动电位扫描、电化学阻抗谱(EIS)技术、接触角测试、以及光电子能谱(XPS)研究了混合自组装膜在铝合金表面的吸附行为及缓蚀性能。结果表明, 三种自组装膜对铝合金在Harrison溶液中的腐蚀都具有一定缓蚀作用, 且缓蚀效果随着自组装溶液中含水量增加而增强, 混合自组装膜的缓蚀性能比单一自组装膜进一步提高。
膦酸
混和自组装膜
铝合金
缓蚀性能
thiol
phosphonic acid
mixed self-assembled monolayer
aluminum alloy
corrosion inhibition performance
Abstract
1-tetradecanethiol (TDT), 1-tetradecylphosphonic acid (TDPA) and TDT-TDPA mixed solutions were prepared using mixtures of absolute ethanol and water with different volume ratios as the solvents, then self-assembled monolayers (SAMs) of TDT, TDPA and mixed TDT-TDPA were deposited on the surfaces of 2024 aluminum alloy by immersing method in the solution. The adsorption behavior and corrosion inhibition performance of SAMs were investigated by potentiodynamic scanning, EIS, contact angle test and XPS. The results indicated that all three kinds of SAMs showed a certain inhibition effect on the aluminum alloy in Harrison solution, and the inhibition efficiency increased with the increase of water content in the assembly solution. The mixed SAM showed more prominent corrosion inhibition performance compared to the single SAMs.
中图分类号 TG174.42
所属栏目 试验研究
基金项目 国家自然科学基金(51001045); 湖北省教育厅青年人才项目(Q20120110)
收稿日期 2013/6/20
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联系人作者屈钧娥(qje@bubu.edu.cn)
备注屈钧娥(1978-), 副教授, 从事材料腐蚀与防护方向的研究,
引用该论文: QU Jun-e,NIE De-jian,ZHENG Ke-yu,LIU Cheng,LIU Shao-bo. Corrosion Inhibition Effect of Thiol-phosphonic Acid Mixed Self-assembled Monolayers on 2024 Aluminum Alloy[J]. Corrosion & Protection, 2014, 35(4): 331
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参考文献
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【3】郭增昌, 王云芳, 王汝敏. 铝合金表面自组装膜层的表征及耐蚀性研究[J]. 材料保护, 2007, 40(7):1-4.
【4】PAUL E H, LUZ M C. Electrochemical properties and corrosion protection of organosilane self-assembled monolayers on aluminum 2024-T3[J]. Electrochimica Acta, 2006, 51:1761-1766.
【5】WANG D H, NI Y H, HUO Q, et al. Self-assembled monolayer and multilayer thin films on aluminum 2024-T3 substrates and their corrosion resistance study[J]. Thin Solid Films, 2005, 471:177-185.
【6】FRIGNANI A, ZUCCHI F, TRABANELLI G, et al. Protective action towards aluminium corrosion by silanes with a long aliphatic chain[J]. Corros Sci, 2006, 48:2258-2273.
【7】REIS F M, DE M H G, COSTA I. EIS investigation on Al 5052 alloy surface preparation for self-assembling monolayer[J]. Electrochimica Acta, 2006, 51:1780-1788.
【8】QU J E, WANG H R, WANG Q, et al. Self-assembling behavior and corrosion inhibition properties of TDPA films on differentlystructured surfaces of 2024 and 1060 aluminumalloys[J]. International Journal of Materials Research, 2012, 103(10):1257-1264.
【9】陈庚, 屈钧娥, 刘少波, 等. 溶剂中水对2024铝合金表面膦酸自组装膜缓蚀性能的影响[J]. 表面技术, 2012, 41(2):5-7.
【10】MA H Y, YANG C, YIN B S, et al. Electrochemical characteriza-tion of copper surface modified by n-alkanethiols in chloride-con-taining solution[J]. Appli Surf Sci, 2003, 218:143-153.
【11】JENNINGS G K, LAIBINIS P E. Self-assembled monolayers of alkanethiols on copper provide corrosion resistance in aqueous environments[J]. Colloi Surf, 1996, 116:105-114.
【12】BATTOCCHI D, SIMOES A M, TALLMAN D E, et al. Comparison of testing solutions on the protection of Al-alloys using a Mg-rich primer[J]. Corrosion Science, 2006, 48:2226-2240.
【13】BLAJIEV O L, ITHURBIDE A, HUBIN A, et al. XPS study of the assembling morphology of 3-hydroxy-3-phosphono-butiric acid tert-butylester on variously pretreated Al surfaces[J]. Progress in Organic Coatings, 2008, 63:272-281.
【14】吕向阳. 3.5% NaCl溶液中铝及其合金缓蚀剂的电化学研究[D]. 重庆: 西南大学硕士学位论文, 2009.
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