Silver bearing copper

W. L. Einlay, Silver-Bearing Copper, Corinthian Edition, Copper Range Co., New York, 1968. 

Certified OFHC Copper 101 OFHC Copper 102 Boron Deoxidized Copper 109 Silver Bearing Copper 113 Silver Bearing Copper 114 Silver Bearing Copper 116 DLP Copper 120 Phosphorized Copper 122 Phosphorized Arsenical... 

Anodes are not attached to the rudder but are situated between the rudder shaft and the ship s wall and connected via a copper strip. The propeller is protected via a slip ring on the shaft. To achieve a low-resistance contact, the divided copper or bronze ring has a rolled silver-bearing surface on which metal graphite brushes slide. The transmission voltage should be below 40 mV. 

All the ores are concentrated in complex mills by selective froth flotation lu produce individual copper, zinc, lead, and, infrequently, silver concentrates. The copper and lead concentrates are smelted to produce lead and copper bullions from which silver is recovered by electrolytic or fine refining. The silver bearing zinc concentrates are commonly processed by leaching and electrolytic methods. Silver is ultimately recovered as a byproduct from zinc plant residues. Canada is a leading silver mining country. Other important sources of silver are Mexico, die United States, Peru, the former U.S.S.R., and Australia. See also Mineralogy. 

Lyte proposes to roast antimony-bearing lead, silver, and copper ores in the presence of chlorides, to condense the antimony vapour in a solution of salt, and to precipitate the metal by iron or duo. This process requires complicated condensii apparatus. 

The 0-methyl-1,1-dithiocarboxylato (i-dtoMe) ligand which corresponds to the methylated derivative of the i-dto ligand does not behave as a tetradentate ligand, in contrast to the corresponding i-dto complexes. Both the silver and copper complexes 134 and 135 bearing the i-dtoMe ligand form a mononuclear... 

Enormous developments in the area of soluble noble metal clusters protected with monolayers are discussed. Mass spectrometry has been the principal tool with which cluster growth has been examined. The composition and chemistry of clusters have been examined extensively by mass spectrometry. Besides gold, silver, platinum, copper and iron clusters have been examined. Clusters have also been examined by tandem mass spectrometry and the importance of ligands in understanding closed shell electronic structure is understood from such studies. Protein protected noble metal clusters belong to a new group in this family of materials. Naked metal clusters bearing the same core composition as that of monolayer protected clusters is another class in this area, which have been discovered by laser desorption ionization from protein templates. 

C11300, C11400, C11500, C11600 Silver-bearing tough pitch copper 99.90 Cu, 0.04 0, Ag(f) F,R,W,T,S G-E... 

Carbon tetrafluoride is noncorrosive and may be used with any common structural material. Silver- and copper-bearing alloys... 

Silver-bearing antimonial fahl-ores free from lime can be heated with Glauber salt and coal in order to convert the antimony into the double sulphide of sodium and antimony. Sulphur dioxide may then be used to decompose the leached salt, with the formation of antimony sulphide and sodimn thiosulphate, the former of which can be treated for antimony in the ordinary manner. Any silver or copper in the ore would be left behind in the residues from the leaching process. 

Many metallic elements are contained in electronic assemblies either as terminations or coatings for component devices or as the electrical circuit, terminations, or coatings on PWBs. The elimination of lead in electronic products requires substitution by other metals that can provide the performance and reliable properties characteristic of traditionally used lead-bearing alloys. There are a number of metal resources that can be selected as substitutes for lead in solders and as coatings for lead-free electronic assemblies. These metals include tin (Sn), silver (Ag), copper (Cu), bismuth (Bi), antimony (Sb), gold (Au), indium (In), nickel (Ni), palladium (Pd), platinum. 

Attack on metals can be a function of fuel components as well as of water and oxygen. Organic acids react with cadmium plating and 2inc coatings. Traces of H2S and free sulfur react with silver used in older piston pumps and with copper used in bearings and brass fittings. Specification limits by copper and silver strip corrosion tests are requited for fuels to forestall these reactions. 

For soldering aluminum, combinations of cadmium and zinc are widely used, the most satisfactory being the 60% Cd—40% Zn alloy, in addition to a 95% Cd—5% Ag solder. In high speed and high temperature appHcations, which are too severe for tin or lead bearings, SAE 18, containing 1% nickel and 99% cadmium, and SAE 180, containing 0.7% silver, 0.6% copper, and 98.7% cadmium, are employed. 

---