Bronze electroplating

In addition to the metals Hsted above, many alloys ate commercially electroplated brass, bronze, many gold alloys, lead—tin, nickel—iron, nickel—cobalt, nickel—phosphoms, tin—nickel, tin—zinc, ziac-nickel, ziac-cobalt, and ziac-iron. Electroplated alloys ia lesser use iaclude lead—iadium, nickel—manganese, nickel-tuagstea, palladium alloys, silver alloys, and zinc—manganese. Whereas tertiary and many other alloys can feasibly be electroplated, these have not found commercial appHcations. 

In view of the difficulties in controlling the electroplating of speculum and bronze coatings, alternative preparation routes through the heat treatment of duplex tin and copper electroplated finishes have been proposed. ... 

Electroplating. Typical wastes produced include spent process solutions containing copper, nickel, chromium, brass, bronze, zinc, tin, lead, cadmium, iron, aluminum, and compounds formed from these metals. 

Some common uses are in electrical wiring and components of electronic equipment, roofing, and pipes and plumbing and in the manufacturing of alloys such as brass, bronze, Monel metal, electroplating, jewelry, cooking utensils, insecticides, marine paints, cosmetics, and wood preservatives. 

Uses. Extraction of gold and silver electroplating hardening of metals coppering zincing bronzing manufacture of mirrors reclamation of silver from photographic film pesticides... 

Electroplating is achieved by passing an electric current through a solution containing dissolved metal ions as well as the metal object to be plated. The metal object acts as a cathode in an electrochemical cell, attracting metal ions from the solution. Ferrous and nonferrous metal objects are typically electroplated with aluminum, brass, bronze, cadmium, chromium, copper, iron, lead, nickel, tin, and zinc, as well as precious metals such as gold, platinum, and silver. Common electroplating bath solutions are listed in Table 7-1. 

Uses cyanide salts are used in silver and gold mining—the cyanide process sodium cyanide is extensively used in industries for electroplating calcium cyanide is used as a fumigant potassium silver cyanide is used in silver plating potassium ferrocyanide is used to achieve a blue color on cast bronze sculptures... 

Electroplating is the practical use of an electrolytic cell. The purpose is to deposit a metal of your choice onto the surface of an object. The steps necessary to get a uniform plate deposited on a conducting surface such as iron, steel, brass, or bronze are shown in Table 26-3, p. 312. 

OTHER COMMENTS used in the manufacture of bronzes, brass, and other copper alloys useful in the manufacture of electric wiring, electrical conductors, switches, and ammunition electroplated protective coatings and undercoats for nickel, chromium, zinc, etc. used in corrosion-resistant piping has also been used in cement, food, drugs, metallurgy, nylon, paper products, pigments, and dyes use as a pollution control catalyst. 

Single-layer bonding systems can be further classified as metal bonded or electroplated. The most common form of metal bonded is the use of sintered bronze. Grade control of the abrasive... 

Electroplating is used to provide decoration, to resist corrosion and to improve the mechanical or electrical properties of metals, plastics and rubber. The metals used for plating include brass, bronze, cadmium, copper, chromium, gold, nickel, silver and tin. It is important to first clean the part to be plated. 

The effect of iodides is particularly powerful. The threshold iodide concentration is only 0.5 pM [78]. They inhibit copper electroplating so strongly that the yellow bronze deposition becomes unfeasible at rather low iodide concentrations exceeding 2-3 pM. 

Brass (Cu 5 10% Zn) releases zinc at temperatures greater than 100°C. Brass may be electroplated with copper or nickel for better vacuum compatibility. Bronze (Cu 1-20% Sn) has many of the same machining properties as brass but is more expensive. A typical bronze is bell-bronze (77% copper, 23% tin). Copper-beryllium (Cu 2 % Be) is much harder than brass. 

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