Prevention of corrosion

Jones D A 1996 Prinoipies and Prevention of Corrosion (Upper Saddie River, NJ Prentice-Haii)... 

Riggs O L and Locke C E 1981 Anodic Protection Theory and Practice in the Prevention of Corrosion (New York Plenum)... 

A recently developed drying appHcation for zeoHtes is the prevention of corrosion in mufflers (52,55). Internal corrosion in mufflers is caused primarily by the condensation of water and acid as the system cools. A unique UOP zeoHte adsorption system takes advantage of the natural thermal cycling of an automotive exhaust system to desorb the water and acid precursors. 

Magnesium Alloy, Processesfor Pretreatment and Prevention of Corrosion On, MUitary Specification MIL-M-3171, Dept, of Navy, Naval Air Engineering Center, Philadelphia, Pa., July 11, 1966. 

MIEM-3171, Processes for Pretreatment and Prevention of Corrosion of Magnesium Mlloys, U.S. Government Printing Office, Washiagton, D.C., 1974. 

Gas treating is defined here as removal of H2S and CO2. Other sulfur compounds are discussed where applicable. Dehydration and sulfur production are not included, except for discussing sulfur production in the Stretford Process and for selective H2S removal. H2S must be removed from natural gas and process streams for health reasons and prevention of corrosion. Natural gas pipeline specifications require no more than % grain/100 SCF. This is equivalent to 4ppmv or 7ppmw (for a 0.65 specific gravity gas). By comparison, the human nose can detect... 

CO2 must be removed for prevention of corrosion and because it lowers the heating value of natural gas. In some treatment situations it is desired to selectively remove H2S and slip most of the CO2. If the CO2 can be tolerated downstream, a more economical treating plant can often be provided that removes only the H2S. Sometimes,... 

The excellent resistance of zinc to corrosion under natural conditions is largely responsible for the many and varied applications of the metal. In fact nearly half the world consumption of zinc is in the form of coatings for the prevention of corrosion of steel fabrications exposed to the atmosphere and to water. For its varied applications zinc is obtainable in a number of grades. Ordinary commercial (G.O.B.) zinc contains up to about I -5% total of lead, cadmium and iron. Electrolytic zinc has a minimum zinc content of 99-95% and contains small amounts of the same impurities. Special high-purity zinc has a minimum of 99-99% zinc. Even purer zincs are commercially available. 

Defence Guide 3A, The Prevention of Corrosion of Cadmium and Zinc Coating by Vapours from Organic Materials, H.M.S.O., London (1966)... 

Ranee, V. E. and Cole, H. G., Corrosion of Metals by Vapours from Organic Materials, H.M.S.O., London (1958) and DG-3A, Defence Guide for the Prevention of Corrosion of Cadmium and Zinc Coatings by Vapours from Organic Materials, H.M.S.O., London (1966)... 

Corrosion of iron has serious economic impacts. Approximately 20% of the iron and steel produced in the United States is used to replace rasted metal, and the cost of replacing corroded materials is several billion dollars per year. Consequently, the prevention of corrosion is a major business. 

Jones, D. A. (1996), Principles and Prevention of Corrosion, Prentice-Hall, Saddle River, NJ. 

The prevention of corrosion is that part of materials science and electrochemistry which, if applied with knowledge, has the potential to save 2-3% of the gross national product, which at present is lost because of the destruction of materials. The field has a strong moving frontier and advantage has been taken of the fact that some of the new information lends itself to diagrammatic presentation. 

Let it be reiterated that the control and prevention of corrosion is a subject with tremendous technological and economic significance. It is not a surprise, therefore, that the literature on this subject contains vast amounts of empirical information. No attempt is made here to survey these details. Rather, it is intended to present in a simplified way the essence of the electrochemical approaches to corrosion prevention. 

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