The molecule, ion, or group bound to the central atom in a chelate or a coordination compound.

The binding of an adsorbate to the surface of a solid by forces whose energy levels approximate those of a chemical bond. Contrast with physisorption.

Localized corrosion frequently observed in oilwell tubing in which a circumfrential attack is observed near a region of metal "upset".

Interfacial reaction equivalent to a transfer of charge between electronic and ionic conductors. See also anodic reaction and cathodic reaction.

A list of metals and alloys arranged according to their relative corrosion potentials in a given environment. Compare with electromotive series.

The positive direction of electrode potential, thus resembling noble metals such as gold and platinum.

Plating wherein fine metal powders are peened onto the work by tumbling or other means.

(1) A metal whose potential is highly positive relative to the hydrogen electrode. (2) A metal with marked resistance to chemical reaction, particularly to oxidation and to evolution by inorganic acids. The term as often used is synonymous with precious m ...

Introducing nitrogen into the surface layer of a solid ferrous alloy by holding at a suitable temperature (below Ac1 for ferritic steels) in contact with a nitrogenous material, usually ammonia or molten cyanide of appropriate composition. Quenching is no ...

Aging under conditions of time and temperature greater than those required to obtain maximum change in a certain property, so that the property is altered in the direction of the initial value.,/dd>

Heating a ferrous alloy to a suitable temperature above the transformation range and then cooling in air to a temperature substantially below the transformation range.

The test or specimen electrode in an electrochemical cell.

Pertaining to forces on a body or part of a body that tend to crush or compress the body.

The maximum repeated stress that can he endured by a metal without failure under definite conditions of corrosion and fatigue and for a specific number of stress cycles and a specified period of time.

A compound that causes oxidation, thereby itself being reduced.

The severe loss of ductility of a metal resulting from corrosive attack, usually inter,granular and often not visually apparent.

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

A thin, not necessarily visible, layer of material.

This potential, sometimes called zeta potential, is a potential difference in the solution caused by residual, unbalanced charge distribution in the adjoining solution, producing a double layer. The electrokinetic potential is different from the electrode ...

One of the group of l5 chemically similar metals with atomic numbers 57 through 7l, commonly referred to as the lanthanides.