A state of resistance to corrosion or anodic dissolution of a metal caused by thermodynamic stability of the metal.

Aging under conditions of time and temperature greater than those required to obtain maximum change in a certain property, so that the property is altered in the direction of the initial value.,/dd>

The chemical or electrochemical reaction between a material, usually a metal, and its environment that produces a deterioration of the material and its properties.

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

Electroplating tin on an object.

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.

A compound that causes oxidation, thereby itself being reduced.

An assembly, consisting of a vessel, electrodes, and an electrolyte, in which electrolysis can be carried out.

See principal stress (normal).

A type of weld cracking that usually occurs below 203

A fracture, usually of' polycrystalline metal, in which most of the grains have failed by cleavage, resulting in bright reflecting facets. It is associated with low-energy brittle fracture.

A reference electrode composed of mercury, mercurous chloride (calomel), and a saturated aqueous chloride solution.

The potential of a reversible oxidation-reduction electrode measured with respect to a reference electrode, corrected to the hydrogen electrode, in a given electrolyte.

Particles of foreign material in a metallic matrix. The particles are usually compounds (such as oxides, sulfides, or silicates), but may be of any substance that is foreign to (and essentially insoluble in) the matrix.

See mixed potential.

Deterioration of metals as a result of the metabolic activity of microorganisms.

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.

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

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