The thermodynamic function 3G = 5H - TSS, where H is enthalpy, T is absolute temperature. and S is entropy. Also called free energy, free enthalpy, or Gibbs function.

The selective corrosion of one or more components of a solid solution alloy, usually in the form of ions. Also called parting or selective leaching. See also decarburization, decobaltification, denickelification, dezincification, and graphitic corrosion.

Embrittlement of stainless steels upon extended exposure to temperatures between 400 and 510

Electrolytic cleaning in which the work is the cathode.

Pertaining to the body-centered cubic crystal structure (BCC) of many ferrous (iron-base) metals.

The maximum stress that can be sustained for a specified number of cycles without failure, the stress being completely reversed within each cycle unless otherwise staled.

Pitting corrosion resulting from deposits on a metal surface which cause concentration cells.

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

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 ...

A black finish on a metal produced by immersing it in hot oxidizing salts or salt solutions.

See gaseous corrosion.

The electroplating of zinc upon iron or steels

(Galvanic Corrosion) Corrosion resulting from dissimilar metal contact.

Electrolytic pickling in which the work is the cathode.

The electrolyte adjacent to the cathode of an electrolytic cell.

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.

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

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

An agent or combination of agents added to an electroplating bath to produce a smooth, lustrous deposit.

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