Glossary Corrosion: All Listings RSS

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An accelerated corrosion test in which specimens are exposed to a fine mist of a solution usually containing sodium chloride, but sometimes modified with other chemicals.

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

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

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

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

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

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

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

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

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 ...

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

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.

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.

(Galvanic Corrosion) Corrosion resulting from dissimilar metal contact.

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

A galvanic cell resulting from difference in oxygen concentration between two locations; See differential aeration cell.

The process in which a metal fractures prematurely under conditions of simultaneous corrosion and repeated cyclic loading at lower stress levels or fewer cycles than would be required in the absence of the corrosive environment.