Lead Plating

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Lead Plating


the application of a coating of lead, sometimes containing tin or antimony, to the surface of metal articles in order to increase corrosion resistance to such chemically aggressive substances as sulfuric and sulfurous acids and gasoline and to shield the articles from the effects of X rays. Lead plating is also used in the manufacture of bimetal.

Lead plating is carried out by immersing articles in molten metal—the hot-dipped method—and by electroless plating, metallization, cladding, and electroplating. In lead plating by immersion, either tin (2–25 percent) or antimony (1–10 percent) is added to the molten lead, since neither iron nor copper—the principal materials subjected to lead plating—forms chemical compounds with lead or solid solutions of appreciable concentration. Electroless plating usually involves a preparatory coating of the article with a thin layer of tin; molten lead is then sponge-plated to the surface. Lead plating by metallization is primarily used to coat large prefabricated structural members. Cladding is used in the manufacture of bimetal sheets, pipes, and anode plates. Electroplating with lead is carried out in fluosilicate, fluoborate, perchlorate, and sulfamate electrolytes. The thickness of the lead coating is 0.1–0.2 mm for protection against atmospheric corrosion and as much as 1–2 mm for protection against chemicals.


Iampol’skii, A. M., and V. A. Il’in. Kratkii spravochnik gal’vanotekhnika. Moscow-Leningrad, 1962.
Lainer, V. I. Zashchitnye pokrytiia metallov. Moscow, 1974.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
In this case, a known amount (nine to 10%) of lead was present on the lead plating in these Pb-free joints.
Continuous hot lead plating units were installed in the USA (three), Great Britain and France (two in each), Japan, FRG, Australia, Belgium and the USSR (one in each).
It is designed for production of one- and two-side lead plating of sheet steel with Pb-7 % Sn coating of 2.5 and 5.0 [micro]im thickness (5.0 jam correspond to the coating of 38 g per 1 [m.sup.2]).
Dirt or debris adhering to a lead--e.g., in the lead plating or skips of dirt in the joint gap--may also be a source for gas exposure, provided this dirt is encapsulated in the joint.
Since the cooling of a soldered joint after leaving the wave is affected by many factors--solder volume in the joint, the heat sinking effect of the parts involved, alloy composition, lead plating, and so on--the solder solidification will not be the same for all joints.
At this stage we asked for lead plating materials because several RoHS seminars we had attended warned that bismuth plating could result in poor solder bonds that were likely to fail.
With fine lines and high density population of printed circuit boards the flat surface and high definition of circuit design produced by Engold SMT is said to offer a distinct advantage over conventional tin lead plating technology which cannot meet the stringent requirements.