Mass Transfer of Inhibitors within the Anticorrosion System

1 Mass Transfer of Inhibitors within the Anticorrosion System 

Liberation of Cl should be in line with the following system parameters  

In the case of optimum supply of corrosion inhibitor into the protecting system the following phenomena take place  

The corrosion system presented in Fig. 1.15a, includes metal article 1 and corrosion medium 2. Polymer composite 3 incorporating a volatile corrosion inhibitor of metals is a part of the system protecting against corrosion. 

It liberates vapors (4) of the inhibitors whose particles are transported via diffusion to the article and adsorb on its surface resulting in layer 5. Liberation, transportation and adsorption velocities of the inhibitor on the article surface should be reasonable from the point of view of protecting the article against corrosion. This means that formation of adsorption layer 5 is to occur before the onset of the corrosion process or at least before it becomes stationary. Since the protecting system is not absolutely leak proof, losses of the inhibitor from layer 5 may occur. New inhibitor supplied from composite 3 replenishes this unavoidable volatilization of the inhibitor vapors. The adsorption equilibrium in layer 5 is in line with the schema  

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