The selective leaching or corrosion of a specific constituent (Al, Ni, Mo, Ni) from an alloy.

A change in dimensions directly proportional to and in phase with an increase or decrease in applied force.

The weight of an element or group of elements oxidized or reduced at 100~ efficiency by the passage of a unit quantity of electricity. Usually expressed as grams per coulomb.

The maximum stress that presumably leads to fatigue fracture in a specified number of stress cycles. If the stress is not completely reversed. the value of the mean stress. the minimum stress, or the stress ratio should also be stated. Compare with endura ...

The potential difference at the junction of two dissimilar substances.

See principal stress (normal).

The formation of complex chemical species by the coordination of groups of atoms termed ligands to a central ion, commonly a metal ion. Generally, the ligand coordinates by providing a pair of electrons that forms an ionic or covalent bond to the central ...

Whitening and loss of gloss of a usually organic coating caused by moisture. Also called blooming.

Plating with dummy cathodes.

A wood-pulping process in which sodium sulfate is used in the caustic soda pulp-digestion liquor. Also called kraft pulping or sulfate pulping.

A metallic connection that provides electrical continuity between metal structures.

Coating containing zinc powder pigment andan organic resin.

The condition of being electrically separated from other metallic structures or the environment.

Conduction of electric current from an underground metallic structure by means of a metallic conductor. Forced drainage is that applied to underground metallic structures by means of an applied electromotive force or sacrificial anode. Natural drainage is ...

A treatment of metal in a solution of a hexavalent chromium compound to produce a conversion coating consisting of trivalent and hexavalent chromium compounds.

The potential of a metal surface necessary to decompose the electrolyte of a cell or a component/substance thereof.

The destruction of adhesion between a coating and its substrate by products of a cathodic reaction.

The ability of a material to deform plastically without fracturing, measured by elongation or reduction of area in a tensile test, by height of cupping in an Erichsen test, or by other means.

Provisional value for plane-strain fracture toughness.

Corrosion effect on a metal per unit of time. The type of corrosion rate used depends on the technical .system and on the type of corrosion effect. Thus, corrosion rate may be expressed as an increase in corrosion depth per unit of time (penetration rate, ...