Abstract
In the present work, an assessment of the corrosion behavior of mild steel in the presence of an organic corrosion inhibitor loaded into hybrid composite materials is performed. Hybrid organic–inorganic nanocontainers based on cerium and titanium oxides were fabricated via a combination of radical polymerization together with the coprecipitation method and sol-gel technique. The corrosion inhibition role of these hybrid materials loaded with an inhibitor is considered. A set of characterization assays addressing morphology, composition and structural aspects of the exposed steels is illustrated, along with electrochemical evaluations. The results reveal enhanced stimuli responsive anticorrosion ability of the produced hybrid materials. Furthermore, upon corrosion, new compounds are formed onto the exposed areas of the treated metals. The conducted experiments shed light on the corrosion mechanisms for steel alloys as well as the actuation of the fabricated composite materials, paving the way for future developments in this area.
Highlights
During the recent years, steel has become one of the most widely used alloys in the sectors of railways and road constructions, as well as in buildings and infrastructures
Taking into account our previous studies based on mild steel [16] together with the additional experiments that were conducted on the protection of mild steel related to the corrosion protection effectiveness of potential inhibitor ATT loaded in cerium-titanium oxide (Cex Tiy Oz ) nanocontainers, the main aim of this study is to present the role of corrosion inhibitors either in free form or loaded into containers and their potential effect to the corrosion protection mechanisms of steel
Carriers made of hybrid materials were fabricated based on an organic core that was used as template for the production of Cex Tiy Oz shells
Summary
Steel has become one of the most widely used alloys in the sectors of railways and road constructions, as well as in buildings and infrastructures. Iron alloys are commonly used in medical, military and aerospace applications because they exhibit enhanced mechanical and tensile strength together with their improved conductivity and ductility properties [2]. Carbon steel is employed as a construction material for pipeline transport production and processing related industries [2,3,4]. The reason is that carbon steel exhibits enhanced mechanical strength and low cost. Steel is assumed to be carbon steel when carbon is the major constituent apart from iron and the carbon content is below wt.% 2.40 [5]. Based on the amount of carbon, three major types of carbon steel exist: low (mild) carbon steel
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