Guidelines on the Use of Traditional Organic Sulfonate Corrosion Inhibitors

Abstract

In this chapter the authors summarized the molecular structure and classification of organic sulfonate in the market. To disclose corrosion inhibition properties of organic sulfonate, a series of test methodologies were established by mimicking different application environment from general and indoor storage to harsh exterior environments, including salt spray test, rust prevention test in the presence of water solution, seven day accelerated lamination test, water displacement test, and single piece rust prevention test. The correlation between the molecular structure, like base number, cation type, micelle size, cation sulfur ration, etc., and the corrosion inhibition performance of organic sulfonate under various mimicked test conditions was systematically revealed, with the comprehensive analysis of their action mechanism based on the produce of hydrophobic adsorption film excluding water and air from reaching the metal surface. Further aspects with respect to the development, synergy effect, and application of organic sulfonate was discussed as well.