Electro-Metallurgical

Air Products, and Electro Metallurgical to form the Union Carbide Carbon Company. In 1957, the company s name was shortened to Union Carbide. In addition to batteries, some of its major products include Prestone antifreeze, Glad wrap, and Champion spark plugs. Union Carbide s reputation was severely hurt in 1984 when its pesticide plant in Bhopal, India, had an accident resulting in the death of2,500 Indians. In February of 2001, a merger between Union Carbide and Dow was completed, making Union Carbide a subsidiary of Dow. 

The calcium-silicon used was 30 to 35 per cent calcium and was supplied by the Electro-Metallurgical Sales Corporation, Niagara Falls, N. Y. 

Obtained from the Electro Metallurgical Co., Niagara Works, Niagara Falls, N.Y. The alloy used in the preparation here described contained 30 to 35 per cent calcium, 60 to 65 per cent sUicon, and a maximum of 3.5 per cent iron. 

A recent and extremely important development lies in the application of the technique of liquid extraction to metallurgical processes. The successful development of methods for the purification of uranium fuel and for the recovery of spent fuel elements in the nuclear power industry by extraction methods, mainly based on packed, including pulsed, columns as discussed in Section 13.5 has led to their application to other metallurgical processes. Of these, the recovery of copper from acid leach liquors and subsequent electro-winning from these liquors is the most extensive, although further applications to nickel and other metals are being developed. In many of these processes, some form of chemical complex is formed between the solute and the solvent so that the kinetics of the process become important. The extraction operation may be either a physical operation, as discussed previously, or a chemical operation. Chemical operations have been classified by Hanson(1) as follows ... 

A common criminalistics problem to which materials science technology is applicable is the recovery of serial numbers which have been obliterated from metal items. We discuss here the metallurgical background of serial number obliteration and recovery, the theory and practice of chemical or electro-chemical methods which form the bulk of the presently employed methods, some techniques based on alternate approaches that are mostly experimental or have been proposed and, lastly, a recently developed serial number marking technique capable of producing more permanent markings. 

Electro-deposition of Nickel.5—The commercial application of this process only dates back to about 1870, for, prior to that date, the difficulty of obtaining sufficiently pure nickel anodes at reasonable prices was an insuperable handicap to their extended use. When, however, improvements were instituted in the metallurgical methods of extracting nickel from its ores which rendered the production of relatively pure nickel possible at a lower cost, the future of the electroplating industry became assured. Nickel is a particularly useful metal... 

Rykalin, N.N., Sorokin, L.M. (1987), Metallurgical RF-Plasmatron Electro- and Gas-Dynamics, Nauka (Science),... 

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