A corrosion test involving exposureof specimens at controlled levels of humidity and temperature. Contrast with salt-fog test.

The formation of blisters on or below a metal surface from excessive internal hydrogen pressure; Formation of blister-like bulges on a ductile metal surface caused by internal hydrogen pressures. Hydrogen may beformed during cleaning, plating, corrosion, ...

A general term for the emhrittlement, cracking, blistering. and hydride formation that can occur when hydrogen is present in some metals.

Deep internal cracks caused by hydrogen.

A process resulting in adecrease of the toughness or ductility of a metal due to the presence of atomic hydrogen. Hydrogen embrittlement has been recognized classically as being of two types. The first known as internal hydrogen embrittlement, occurs when ...

Overvoltage associated with the liberation of hydrogen gas.

See hydrogen embrittlement.

See hydrogenembriltlement.

See hydrogen embrittlement.

Same as hydrogen embrittlement.

(1) Decomposition or alteration of a chemical substance by water. (2) In aqueous solutions of electrolytes, the reactions of cations with water to produce a weak base or of anions to produce a weak acid.

Having an affinity for water. Contrast with hydrophobic.

Lacking an affinity for, repelling, orfailing to absorb or adsorb water. Contrast with hydrophilic.

(1) Possessing a marked ability to accelerate the condensation of water vapor; applied to condensation nuclei composed of salts that yield aqueous solutions of a very low equilibrium vapor pressure compared with that of pure water at the same temperature. ...

Depositing a metallic coating on a metal immersed in a liquid solution, without the aid of an external electric current. Also called dip plating.

A state of resistance to corrosion or anodic dissolution of a metal caused by thermodynamic stability of the metal.

A form of erosion-corrosion generally associated with the local impingement of a high-velocity. Flowing fluid against a solid surface.

Direct current supplied by a device employing a power source external to the electrode system of a cathodic protection installation.

Particles of foreign material in a metallic matrix. The particles are usually compounds (such as oxides, sulfides, or silicates), but may be of any substance that is foreign to (and essentially insoluble in) the matrix.

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