Corrosion which is increased because of the abrasive action of a moving stream; the presence of suspended particles greatly accelerates abrasive action.See erosion-corrosion.

The potential of an electrode in an electrolyte as measured against a reference electrode. The electrode potential does not include any resistance losses in potential in either the solution or external circuit. It represents the reversible work to move a ...

That portion of the polarization of a cell produced by concentration changes resulting from passage of' current through the electrolyte.

Water that contains certain salts, such as those of calcium or magnesium, which form insoluble deposits in boilers and form precipitates with soap.

Modification of a corrosion system so that corrosion damage is mitigated.

To coat a metal surface with zinc using any of various processes.

A reaction in which there is a decrease in valence resulting from a gain in electrons. Contrast with oxidation.

Forming an adherent phosphate coating on a metal by immersion in a suitable aqueous phosphate solution. Also called phosphatizing. See also conversion coating.

Accelerated corrosion of a metal because of an electrical contact with a more noble metal or nonmetallic conductor in a corrosive electrolyte.

System consisting of one or more metals and all parts of the environment that influence corrosion.

Depositing filler metal on a surfsae by welding, spraying, or braze welding to increase resistance to abrasion, erosion, wear, galling. impact, or cavitation damage.

An experimental technique where by an electrode is maintained at a constant current in an electrolyte.

The severe loss of ductility of a metal resulting from corrosive attack, usually inter,granular and often not visually apparent.

The electromotive force generated in a circuit containing two dissimilar metals when one junction is at a temperature different from that of the other. see also thermocouple.

An electrolytic cell, the electromotive force of which is caused by a difference in concentration of some component in the electrolyte. This difference leads to the formation of discrete cathode and anode regions.

The electric current that flows between metals or conductive nonmetal in a galvanic couple.

The force or load that produces elongation.

A galvanic cell resulting from inhomogeneities between areas on a metal surface in an electrolyte. The inhomogeneities may be of physical or chemical nature in either the metal or its environment.

In a thermodynamic system of several constituents, the rate of change of the Gibbs function of the system with respect to the change in the number of moles of a particular constituent.

Surface discoloration of a metal caused by formation of a thin film of corrosion product.