A type of inhibitor that appreciably changes the potential of u metal to a more noble (positive) value.

The electrolyte adjacent to the cathode of an electrolytic cell.

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

A period prior to the detection of corrosion while the metal is in contact with a corrodent.

The portion of solution in immediate contact with the cathode during electrolysis.

(1) A reaction in which there is an increase in valence resulting from a loss of electrons. Contrast with reduction. (2) A corrosion reaction in which the corroded metal forms an oxide; usually applied to reaction with a gas containing elemental oxygen, s ...

A network of checks or cracks appearing on the surface.

Localized corrosion of a metal surface at, or immediately adjacent to, an area that is shielded from full exposure to the environment because of close proximity between the metal and the surface of another material.

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

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 ...

A process in which metal ions in a dilute aqueous solution are plated out on a substrate by means of autocatalytic chemical reduction.

(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 ...

Electrolytic pickling in which the work is the cathode.

A cell developed in an electrolyte resulting from electrical contact between two dissimilar metals. See galvanic corrosion.

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

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 ratio of the electric current density to the electric field in a material. Also called electrical conductivity or specific conductance.

A compound with a central atom or ion bound to a group of ions or molecules surrounding it. Also called coordination complex. See also chelate, complexation, and ligand.

A substance that produces depolarization.

The maximum compressive stress a material is capable of developing. With a brittle material that fails in compression by fracturing, the compressive strength has a definite value. In the case of ductile, malleable, or semiviscous materials (which do not f ...