The protection of the bottoms of aboveground storage tanks (AST) using Volatile corrosion inhibitors (VpCI), or vapor phase corrosion inhibitors belonging to the organic group of inhibitors was investigated. The vapors adsorbe on the metal surface and suppress metal dissolution and reduction reactions. These affect anodic and cathodic processes. VpCis have moderately high vapor pressure and can prevent corrosion without being applied directly to the metal surface. The performance of VpCIs in these applications is confirmed by several corrosion and electrochemical methods. VpCIs provide effective corrosion protection for single and double bottom storage tanks. The corrosion rate of CS protected by a VpCI is two to three times lower than unprotected steel. VpCI can be applied in powder form or as slurry, by mixing it with the sand used for the installation of the tanks. The results show that VpCI is compatible with CP and, when used in combination with it, reduces the protective current required.


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    Title :

    Storage tank protection using volatile corrosion inhibitors


    Additional title:

    Schutz von Lagertanks durch Dampfphaseninhibitoren


    Contributors:

    Published in:

    Materials Performance ; 45 , 6 ; 34-37


    Publication date :

    2006


    Size :

    4 Seiten, 9 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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