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

See principal stress (normal).

See cathodic protection.

Electroplating tin on an object.

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

The chemical or electrochemical reaction between a material, usually a metal, and its environment that produces a deterioration of the material and its properties.

A type of weld cracking that usually occurs below 203

Corrosion which is increased because of the abrasive action of a moving stream; the presence of suspended particles greatly accelerates abrasive action.See erosion-corrosion.

An assembly, consisting of a vessel, electrodes, and an electrolyte, in which electrolysis can be carried out.

A fracture, usually of' polycrystalline metal, in which most of the grains have failed by cleavage, resulting in bright reflecting facets. It is associated with low-energy brittle fracture.

Modification of a corrosion system so that corrosion damage is mitigated.

System consisting of one or more metals and all parts of the environment that influence corrosion.

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.

An electrode immersed in a suitable electrolyte, designed for measurements of electrode potential; A pure metal in contact with a solution of known concentration of its own ion, at a specific temperature develops a potential which is characteristic and re ...

Deterioration of metals as a result of the metabolic activity of microorganisms.

See mixed potential.

To coat a metal surface with zinc using any of various processes.

A measure of the acidity or alkalinity of a solution; The negative logarithm of the hydrogen-ion activity; it denotes the degree of acidity or basicity of a solution. At 25

A reference electrode composed of mercury, mercurous chloride (calomel), and a saturated aqueous chloride solution.

That portion of the polarization of a cell produced by concentration changes resulting from passage of' current through the electrolyte.