Investigation of some Schiff bases as acidic corrosion of alloy AA3102
Investigation of some Schiff bases as acidic corrosion of alloy AA3102
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DOI：
10.1016/j.matchemphys.2004.09.003
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发表时间：
2005-01-15
影响因子：
4.6
通讯作者：
Kabasakaloglu, M
中科院分区：
文献类型：
--
作者：
Aytaç, A;Özmen, Ü;Kabasakaloglu, M
用析氢法和交流阻抗法研究了几种席夫碱对AA 3102铝在0.1M盐酸中的缓蚀作用。以水杨醛和相应的胺为原料，合成了2-羟基苯乙酮-乙磺酰腙、水杨醛缩乙磺酰腙、5-溴水杨醛缩乙磺酰腙和5-氯水杨醛缩乙磺酰腙。析氢实验表明，缓蚀剂的存在大大提高了耐蚀性。这些结果通过阻抗测量证实，其中观察到抑制剂添加的效果表现为电阻增加和界面容量降低。结果表明，它们的作用取决于它们的浓度和分子结构。两种方法对5-溴水杨醛缩四磺酰腙和5-氯水杨醛缩四磺酰腙的缓蚀效率最高。(C)2004 Elsevier B. V.保留所有权利。
The inhibiting effect of some Schiff bases on the corrosion of AA3102 aluminium in 0.1 M HCl has been studied by means of the hydrogen evolution and electrochemical impedance spectroscopy. The Schiff bases 2-hydroxyacetophenone-etansulphonylhydrazone, Salicylaldehyde-etansulphonylhydrazone, 5-bromosalicylal-dehyde-etansulphonylhydrazone and 5-chlorosalicylaldehyde-etansulphonylhydrazone were synthesized from salicylaldehyde and the corresponding amine. The hydrogen evolution tests showed that the corrosion resistance was greatly enhanced in presence of inhibitors. These results were confirmed by the impedance measurements where it was observed that the effect of inhibitor addition appears by an increase in the resistance and by a decrease in the capacity of interface. It is suggested that their effects depend on their concentration and the molecular structures. The maximum inhibition efficiencies were obtained for the 5-bromosalicylaldehydetansulphonylhydrazon and 5-chlorosalicylalde-hyde-etansulphonylhydrazone by both methods. (C) 2004 Elsevier B.V. All rights reserved.