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Leading - deposition of lead layer (sometimes with admixtures of tin or antimony) on the surface of metal items to protect them from corrosion and also X-ray beams influence. It is performed by immersion into the melt, rubbing, metallization, plating, galvanic method.

Phosphatizing - to provide high strength of cohesion of lacquer coating with metal, phosphate films are deposited on the surface of the latest by chemical method, which simultaneously increases corrosion resistance of the items. Phosphate films have good dielectric properties.

Oxidation - creation of oxide film on the surface of the item or workpiece in the result of oxidation-reduction reaction.

Mainly used for obtaining protective and decorative coating.

There are thermal, chemical, electrochemical (or anode) and plasmatic oxidation.