The reciprocal of polarization resistance (di/dE).

The shear stress on a transverse cross section resulting from u twisting action.

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

An instrument for automatically maintaining an electrode in an electrolyte at a constant potential or controlled potentials with respect to a suitable reference electrode.

Coating metal with a very thin layer of molten solder or brazing filler metal.

Deterioration of material caused by ion impact.

When an electrode reaches dynamic equilibrium in a solution, the rate of anodic dissolution balances the rate of cathodic plating. The rate at which either positive or negative charges are entering or leaving the surface at this point is known as the exch ...

Brittle fracture of a metal in which the fracture is between the grains, or crystals, that form the metal. Also called intercrystalline fracture. Contrast with transgranular fracture.

The permanent (inelastic) distortion of metals under applied stresses that strain the material beyond its elastic limit.

A cracking process that requires the simultaneous action of a corrodent and sustained tensile stress. This excludes corrosion-reduced sections that fail by fast fracture. It also excludes intercrystalline or transcrystalline corrosion, which can disintegr ...

In chemistry,a homogeneous dispersion of two or more kinds of molecular or ionic species. Solution may be composed of any combination of liquids, solids, or gases, but they always consist of a single phase.

A single, solid, homogeneous crystalline phase containing two or more chemical species.

Release of contained gas in the vaccum of outer space. eg. rapid destructive expansion of plastics and similar materials.

Also called solidification crackinghot cracking of weldments is caused by the segregation at grain boundaries of low-melting constituents in the weld metal. This can resultin grain-boundary tearing under thermal contraction stresses. Hot cracking can be m ...

Aqueous solution that contains 1 mole (gram-molecular weight) of solute in 1 L of the solution.

Being or composed of matter other than hydrocarbons and their derivatives, or matter that is not of plant or animal origin. Contrast with organic.

See hydrogen embrittlement.

A plot of the redox potential of a corroding system versus the pH of the system, compiled using thermodynamic data and the Nernst equation. The diagram shows regions within which the metal itself or some of its compounds are stable.

Plastic deformation by the irreversible shear displacement (translation) of one part of a crystal relative to another in a definite crystallographic direction and usually on a specific crystallographic plane. Sometimes called glide.

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