Abstract
Corrosion growth can be controlled/inhibited by presenting a protective and stable layer of conductive polymers, inert metals, monolayers, or an inorganic compound of heterocyclic or graphitic structure between the metal surface and corrosive surrounding environment. Corrosion inhibitors are used in different fields including cooling water treatment, metal pickling, metal cutting fluid, and chemical and electrochemical etching. Recently, self-healing coatings and corrosion inhibitors were developed for smart inhibition of surfaces. In comparison with traditional coatings, which could only protect surfaces via a simple film, the new coatings containing micro/nanocarriers are able to provide a precise control over the corrosion inhibitor release time and the amount of them introduced into the coating bulk. These smart coatings provide controlled-release systems with a sophisticated architecture to precisely tune the release rate for a definite time period and can be directly controlled by triggering/affecting the stimulus. In this chapter, we will discuss recent progresses in the design of micro/nanoscaled stimuli-responsive inhibitor delivery systems that are able to influence inhibitor distribution control normally or in response to certain stimuli, either exogenous (variations in temperature) or endogenous (changes in pH).
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