A metal in which the available electron energy levels are occupied in such away that the d-band contains less than its maximum number of ten electrons per atom, for example, iron, cobalt, nickel, and tungsten. The distinctive properties of the transition ...

(1) An arbitrarily defined temperature that lies within the temperature range in which metal fracture characteristics (as usually determined by tests of notched specimens) change rapidly, such as from primarily fibrous (shear) to primarily crystalline (cl ...

The binding of an adsorbate to the surface of a solid by forces whose energy levels approximate those of condensation. Contrast with chemisorption.

The movement of ions through the electrolyte associated with the passage of the electric current. Also called transport or migration.

Any metallic structure that is not intended as part of a cathodic protection system of interest.

A tendency for some alloys to separate along grain boundaries when stressed ordeformed at temperatures near the melting point.Hot shortness is caused by a low-melting constituent, often present only in minute amounts,that is segregated at grain boundaries ...

A process resulting in adecrease of the toughness or ductility of a metal due to the presence of atomic hydrogen. Hydrogen embrittlement has been recognized classically as being of two types. The first known as internal hydrogen embrittlement, occurs when ...

The formation of isolated particles of corrosion products beneath the metal surface. This occurs as the result of preferential oxidation of certain alloy constituents by inward diffusion of oxygen, nitrogen, sulfur, and so forth.

Corrosion occurring preferentially at grain boundaries, usually with slight or negligible attack on the adjacent grains. Also called intercrystalline corrosion.

A specimen that is notched and subjected to alternating stresses until a crack has developed at the root of the notch.

A chain of organic molecules produced by the joining of primary units called monomers.

Coating containing a zinc powder pigment in an inorganic vehicle.

A metal whose luster has been reduced because of a surface film, usually a corrosion product layer.

Corrosion that proceeds laterally from the sites of initiation along planes parallel to the surface, generally at grain boundaries, forming corrosion products that force metal away from the body of the material, giving rise to a layered appearance.

Resin formed from reactions involving furfuryl alcohol alone or in combination with other constituents.

A buried item, such as junk steel or graphite rods, that serves as the anode for the cathodic protection of pipelines or other buried structures. See also deep groundbed.

The intensity of the internally distributed forces or components of forces that resist a change in the volume or shape of a material that is or has been subjected to external forces. Stress is expressed in force per unit area and is calculated on the basi ...

The component of either a liquid or solid solution that is present to a greater or major extent; the component that dissolves the solute.

An aggregate of iron or alloy carbides of essentially spherical shape dispersed throughout a matrix of ferrite.

Ratio of the depth of the deepest pit resulting from corrosion divided by the average penetration as calculated from weight loss.