VAPOUR‐PHASE CORROSION INHIBITORS

A relatively recent development in the field of corrosion prevention has been the advent of the volatile inhibitor, although it is true to say that inhibition may occur when the normally volatile inhibitor is in the solid or gaseous state. Inhibitors are chemical substances which will reduce the intensity of the anodic or cathodic reactions. The most important class of chemical agents used function by changing the electrochemical processes occurring at the metallic surfaces, e.g. chromates, nitrites and phosphates.