In electroplating, a supplementary anode positioned so as to raise the current density on a certain area of the cathode and thus obtain better distribution of plating.

A process involving conjoint corrosion and cavitation.

Splitting (fracture) of a crystal on a crystallographic plane of' low index.

A composite metal containing, two or more layers that have been bonded together. The bonding may have been accomplished by co-rolling, co-extrusion, welding, diffusion bonding, casting, heavy chemical deposition, heavy electroplating, or explosive claddin ...

Electrochemical system consisting of an anode and a cathode immersed in an electrolyte. The anode and cathode may be separate metals or dissimilar areas on the same metal. The cell includes the external circuit, which permits the flow of electrons from th ...

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 ...

Ability of a metal to withstand corrosion in a given corrosion system.

An anode that is insoluble in the electrolyte under the conditions prevailing in the electrolysis.

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 ...

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.

Foreign substance which comes from the environment, adhering to a surface of a material

Deposition of a metal or compound on a heated surface by reduction or decomposition of a volatile compound at a temperature below the melting points of the deposit and the base material. The reduction is usually accomplished by a gaseous reducing agent su ...

The number of cycles of stress that can be sustained prior to failure under a stated test condition.

(Galvanic Corrosion) Corrosion resulting from dissimilar metal contact.

A movement of electrons in an external circuit connecting an anode and cathode in a corrosion cell; the current flow is arbitrarily considered to be in an opposite direction to the electron flow.

The mass of unit volume of a material at a specified temperature.

The net transfer of electric charge per unit time. Also called electric current. See also current density.

A decrease in the polarization of an electrode; the elimination or reduction of polarization by physical or chemical means; depolarization results in increased corrosion.

The liquid material remaining from pulpwood cooking in the soda or sulfate paper-making process.

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