盐酸介质中脂肪胺类化合物对铝材的缓蚀作用

材料保护, 2001, 34(4): 10-12. doi: 10.3969/j.issn.1001-1560.2001.04.005

盐酸介质中脂肪胺类化合物对铝材的缓蚀作用

帅长庚 ^1, , 邓淑珍 ^2, , 宋玉苏 ^3, , 银继伟 ^4,

1.海军工程大学化学教研室

2.海军工程大学化学教研室

3.海军工程大学化学教研室

4.海军工程大学化学教研室

关键词：缓蚀剂 , 缓蚀作用 , 脂肪胺 , 铝

Corrosion Inhibition Effect of Aliphatic Amines on Aluminum in HCl Solution

用失重法和电化学方法研究了正丁胺、二乙胺、乌洛托品在1.0 mol/L HCl中对铝的缓蚀作用，并对其机理进行了探讨。研究结果表明：起初，3种化合物对铝均具有缓蚀作用，缓蚀效果：乌洛托品＞二乙胺＞正丁胺，随着时间的延长，缓蚀效率逐渐降低；3种化合物均为吸附型缓蚀剂，对铝腐蚀的阴极过程和阳极过程都有一定的抑制作用，其吸附符合兰格缪尔等温吸附方程。

The corrosion inhibition effect of aliphatic amines on industrial pure aluminum in 1.0 mol/L HCl solution was investigated by weightloss and electrochemical methods. The inhibition efficiency was found to decrease in following order hexamethylenetetramine >diethylamine>nbutylamine. The thermodynamic functions of adsorption ΔG0am and corrosion potential Ek were evaluated. The authors pointed out that the adsorption of amines followed Langmuir isothermal equation.

参考文献

[1]	王成,江峰,许刚,林海潮,余刚,张晓峰,丁晖.巴比妥钠对铝合金在NaCl溶液中缓蚀作用的研究[J].腐蚀科学与防护技术,2000(03):144-147.
[2]	Suhybani A A .Al Corrosion of aluminium in hydrochloric acid soluti ons Partl-The inhibitive action of monoamines[J].Corrosion Prevention and Control,1989,38(03):71.
[3]	Suhybani A A .Al Corrosion of aluminium in HCl Part2-The inhibitiv e action of diamines[J].Corrosion Prevention and Control,1990,39(01):11.
[4]	Suhybani A A .Al Corrosion of aluminium in hydrochloric acid soluti ons Part3-The effect of triamines[J].Corrosion Prevention and Control,1990,39(04):106.

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