A list of metals and alloys arranged according to their relative corrosion potentials in a given environment. Compare with electromotive series.

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

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

Interfacial reaction equivalent to a transfer of charge between electronic and ionic conductors. See also anodic reaction and cathodic reaction.

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

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

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

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

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

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

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.

Being or composed of hydrocarbons or their derivatives, or matter of plant or animal origin. Contrast with inorganic.

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.

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

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

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

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

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.

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.

Pertaining to the current resulting from the coupling of dissimilar electrodes in an electrolyte