KINETICS OF STEEL CORROSION IN HYDROCHLORIC-ACID INHIBITED WITH TRANS-CINNAMALDEHYDE

被引：41

作者：

GROWCOCK, FB

FRENIER, WW

机构：

[1] Dowell Schlumberger, Tulsa, OK, USA, Dowell Schlumberger, Tulsa, OK, USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1988年 / 135卷 / 04期

关键词：

ADSORPTION - CORROSION PROTECTION - Inhibitors - HYDROCHLORIC ACID - Corrosive Effects - PLASTICS FILMS - SURFACE ACTIVE AGENTS;

D O I：

10.1149/1.2095783

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Measurements of the kinetics of steel corrosion in hydrochloric acid inhibited with trans-cinnamaldehyde (TCA) indicate that both adsorption of TCA and formation of a continuously thickening polymer film are important features of the inhibition mechanism. Surfactants play a key role in facilitating the adsorption reaction. We propose that adsorption involves formation of a tenacious highly protective surface complex on the protonated chloride-covered steel. TCA can also undergo reduction at the surface, thus initiating polymerization reactions that lead to growth of a barrier film. However, film formation depletes the solution of TCA, which can affect the stability of the sorbed complex.

引用

页码：817 / 822

页数：6

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