Synergistic effect of different Zn salts with sodium octanoate on the corrosion inhibition of carbon steel in cooling water

被引：10
|
作者：
Mohamed, K. E. M. [1 ]
Ibrahim, O. H. [1 ]
El-Bedawy, M. E. [1 ]
Ali, A. H. [1 ]
机构：
[1] Atom Energy Author, Dept Met, Cairo, Egypt
来源：
JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES | 2020年 / 13卷 / 01期
关键词：
Corrosion inhibition; carbon steel; sodium octanoate; Zn salts; synergism; MILD-STEEL; NEUTRAL SOLUTIONS; ACID; GREEN; IRON; PASSIVATION; FORMULATION; ALUMINUM; BEHAVIOR; IONS;
D O I：
10.1080/16878507.2020.1730603
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The corrosion inhibition of carbon steel was investigated in cooling water containing sodium octanoate (Oct), Zn-salts or blends of Oct-Zn salts. The weight loss and the potentiodynamic polarization methods were applied. ZnCl2, ZnSO4 and Zn (NO3)(2) were studied. The results showed that Oct-Zn salt blends exhibited higher corrosion inhibition efficiency than either Oct or Zn Salts added separately to the cooling water suggesting a synergistic interaction between Oct and the Zn-salts. The polarization results revealed that these blends act as mixed-type inhibitors with three dominant anodic inhibition. The inhibition efficiency of Zn-salts in the absence and presence of Oct was found to decrease in the order Zn (NO3)(2) > ZnSO4 > ZnCl2. Optical microscopy and infrared spectroscopy were used to study the protective action of the films formed on carbon steel in Oct-Zn salt blends. The role of Zn anions and the synergism behavior were discussed.
引用
收藏
页码：276 / 287
页数：12
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