The fracture toughness determined under dynamic loading conditions; it is used as an approximation of KIc for very tough materials.

The mass of a unit volume of a gas at a stated temperature and pressure.

The minimum value of Kc for any given material and condition, which is attained when rapid crack propagation in the opening mode is governed by plane-strain conditions.

The potential difference at the junction of two dissimilar substances.

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

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 ...

Corrosion resulting from an electrochemical cell caused by a thermal gradient.

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.

An obsolete historical term denoting a form of stress-corrosion cracking most frequently encountered in carbon steels or iron-chromium-nickel alloys that are exposed to concentrated hydroxide solutions at temperatures of 200 to 250

A powerfully oxidizing allotropic form of the element oxygen. The ozone molecule contains three atoms (O3). Ozone gas is decidedly blue, and both liquid and solid ozone are an opaque blue-black color, similar to that of ink.

(1) Hardening suitable a = b alloys (most often certain copper or titanium alloys) by solution treating and quenching to develop a martensite-like structure. (2) In ferrous alloys, hardening by austenitizing and then cooling at a rate such that a substant ...

(1) The removal of oxygen from molten metals by use of suitable deoxidixers. (2) Sometimes refers to the removal of undesirable elements other than oxygen by the introduction of elements or compounds that readily react with them. (3) In metal finishing, t ...

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 ...

An oil capable of conversion from a liquid to a solid by slow reaction with oxygen in the air.

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.

Coating containing zinc powder pigment andan organic resin.

A metallic connection that provides electrical continuity between metal structures.

Naturally occurring magnetic oxide of iron (Fe3O4).

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.