الفهرس | Only 14 pages are availabe for public view |
Abstract Among the natural occurring waters, seawater is only electrolytecontaining a relatively high concentration of salts. It is boththe most familiar and the most severe of natural corrosive agents. Corrosion is the destructive attack of metals by chemical or electrochemicalreaction with its environment. The electrochemical mechanismof corrosion shows that the rates of anodic and cathodicprocesses are independent and that either or both may controlthe rate of corrosion. Literature survey on the work done to studythese processesin seawater helps in better understanding of corrosionandthe waysof combating it. Part I: Cathodic and Anodic Processes Occuring on Steel in Seawater. Severalmechanisms for the cathodic and anodic processes, occurringon metals in aqueous media, are reviewed by Shreir L.L.(l) Thesemechanisms are nummarized as follows: 1.cathodicprocess on metals in aqueous media The reduction of the H30+ ion in acid solutions or the H20 moleculesin neutral and alkaline solutions are the common . |