Glossary Corrosion: All Listings RSS

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The frequency-dependent complex-valued proportionality factor (A

Corrosion effect on a metal per unit of time. The type of corrosion rate used depends on the technical .system and on the type of corrosion effect. Thus, corrosion rate may be expressed as an increase in corrosion depth per unit of time (penetration rate, ...

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

Electrolytic cleaning in which the work is the cathode.

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.

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

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.

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

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 ...

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

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.

Electrolytic pickling in which the work is the cathode.

The electroplating of zinc upon iron or steels

See gaseous corrosion.

The electrolyte adjacent to the cathode of an electrolytic cell.

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

(Galvanic Corrosion) Corrosion resulting from dissimilar metal contact.

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

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