氟碳表面活性剂FY-F501对铝合金的缓蚀性能

doi:10.3724/SP.J.1095.2014.30246

摘要/Abstract

摘要： 利用表面张力仪测定了氟碳表面活性剂FY-F501在(20±0.1) ℃水溶液中的表面张力，结果表明，其临界胶团浓度为9×10-6 mol/L。在(20±0.1) ℃，使用静态失重法研究了氟碳表面活性剂在浓度为100 mg/L的二氧化氯溶液中对铝合金的缓蚀效果。结果表明，在临界胶团浓度附近时缓蚀效果最佳，最大缓蚀效率可达94.5%。采用电化学和扫描电子显微镜进一步研究了该种表面活性剂的缓蚀机理。对静态失重法所得数据进行线性拟合，表明该种表面活性剂在铝合金表面形成了单分子吸附层，抑制了铝合金的腐蚀活化反应过程，其吸附符合Langmuir吸附模型。

关键词: 二氧化氯, 双子氟碳表面活性剂, 铝合金, 缓蚀

Abstract: The surfacical tension of fluorocarbon surfactant FY-F501 was measured by the surface tension meter in aqueous solution at (20±0.1) ℃. The results show that the critical micelle concentration is 9×10-6 mol/L. The corrosion inhibition effect of FY-F501 on aluminum alloy in 100 mg/L chlorine dioxide was studied at (20±0.1) ℃ by static mass loss method. The data show that, the inhibition effect is optimal at the critical micelle concentration and the maximum inhibition efficiency can reaches 94.5%. Furthermore, the corrosion inhibition mechanism of the surfactant was studied using electrochemical method and SEM. The linear fit of the data of the static mass loss method shows that a single molecule adsorption layer is formed on the surface of the aluminum alloy. This helps to inhibit the corrosion reaction of the aluminum alloy activation and the adsorption follows the Langmuir adsorption model.

Key words: chlorine dioxide, gemini fluorocarbon surfactant, aluminum alloy, corrosion inhibition

中图分类号:

O647.1

高金龙, 吴海霞, 张聪婧, 王奎涛. 氟碳表面活性剂FY-F501对铝合金的缓蚀性能[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.30246.

GAO Jinlong, WU Haixia, ZHANG Congjing, WANG Kuitao*. Corrosion Inhibition Performance of Fluorocarbon Surfactant FY-F501 for Aluminum Alloy[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30246.

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