The part of the total carbon in steel or cast iron that is present as other than free carbon.

(1) A cell, the emf of which is due to the potential difference between a metal in an active state and the same metal in a passive state. (2) A corrosion cell in which the anode is a metal in the active state and the cathode is the same metal in the passi ...

An instrument for indicating or measuring a small electric current by means of a mechanical motion derived from electromagnetic or electrodynamic forces produced by the current.

Electrode reaction equivalent to a transfer of negative charge from the electronic to the ionic conductor. A cathodic reaction is a reduction process. An example common in corrosion is: Ox + ne s Red.

A positively charged ion that migrates through the electrolyte toward the cathode under the influence of a potential gradient. See also anion and ion.

The electrolyte adjacent to the cathode of an electrolytic cell.

A network of checks or cracks appearing on the surface.

The stress that will cause fracture in a creep test at a given time in a specified constant environment. Also called stress-rupture strength.

The electroplating of zinc upon iron or steels

(1) The amount of any substance dissolved or deposited in electrolysis is proportional to the total electric charge passed. (2) The amounts of different substances dissolved or deposited by the passage of the same electric charge are proportional to their ...

The development of slight breaks in a coating that do not penetrate to the underlying surface.

The rate of crack extension caused by constant-amplitude fatigue loading, expressed in terms of crack extension per cycle of load application.

The ratio of the electrochemical equivalent current density for a specific reaction to the total applied current density.

The range of the stress-intensity factor during a fatigue cycle.

A pair of dissimilar conductors, commonly metals, in electrical contact. See also galvanic corrosion.

A substance that produces depolarization.

Fracture of a metal during quenching from elevated temperature. Most frequently observed in hardened carbon steel, alloy steel, or tool steel parts of high hardness and low toughness. Cracks often emanate from fillets, holes, corners, or other stress rais ...

The destruction of adhesion between a coating and the surface coated.

A process involving conjoint corrosion and cavitation.

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 ...