Cathodic Protection of Iron | Nature

ABSTRACT IT has been frequently suggested that the cathodic protection of iron in chloride solutions is due to the depression of its potential to or below the open-circuit potential of the

local anodes1,2. However, in neutral solutions containing dissolved oxygen the open-circuit potential of the local anodes cannot be measured directly without assuming the previous statement

to be true. Nor can it be calculated from the Nernst equation, since the ferrous ion activity in equilibrium with hydrated ferric oxide is unknown. Since the formation of hydrated ferric

oxide may be represented by an equation such as 4 Fe++ + 8 OH′ + O2 = 4 FeO.OH + 2H2O it is implicit that the open-circuit potential of the local anodes should become more electronegative

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Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS OXIDATION AND ELECTRICAL PROPERTIES OF CHROMIUM–IRON ALLOYS IN A CORROSIVE MOLTEN ELECTROLYTE ENVIRONMENT Article Open access

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OF IRON AND STEEL IN POROUS MEDIA Article Open access 16 February 2024 REFERENCES * Hoar, T. P., _Trans. Farad. Soc._, 30, 480 (1934). Article  Google Scholar  * Mears, R. B., and Brown, R.

H., _Trans. Electrochem. Soc._, 74, 519 (1938). Article  Google Scholar  * Pryor, M. J., and Evans, U. R., _J. Chem. Soc._, 1259 (1950). * Pryor, M. J., _J. Electrochem., Soc._, 102, 163

(1955). Article  CAS  Google Scholar  Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Metallurgical Research, Kaiser Aluminum and Chemical Corporation,

Spokane, 69, Washington M. J. PRYOR Authors * M. J. PRYOR View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions

ABOUT THIS ARTICLE CITE THIS ARTICLE PRYOR, M. Cathodic Protection of Iron. _Nature_ 178, 1245–1246 (1956). https://doi.org/10.1038/1781245a0 Download citation * Issue Date: 01 December

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