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copper-gold alloy

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  • Gold plating — is a method of depositing a thin layer of gold onto the surface of another metal, most often copper or silver, by chemical or electrochemical means.Mechanical or chemical affixing of thin gold foils onto the surface of objects is instead known as …   Wikipedia

  • Gold (disambiguation) — Gold is a highly sought after precious metal that for many centuries has been used as money.Gold may also refer to:Business* Barrick Gold, the largest gold mining company in the world * Gold s Gym, international chain of fitness centers… …   Wikipedia

  • Copper — For other uses, see Copper (disambiguation) …   Wikipedia

  • Alloy — This article is about the type of material. For the specification language, see Alloy (specification language). For lightweight auto wheels, see alloy wheel. Steel is a metal alloy whose major component is iron, with carbon content between 0.02%… …   Wikipedia

  • gold — /gohld/, n. 1. a precious yellow metallic element, highly malleable and ductile, and not subject to oxidation or corrosion. Symbol: Au; at. wt.: 196.967; at. no.: 79; sp. gr.: 19.3 at 20°C. 2. a quantity of gold coins: to pay in gold. 3. a… …   Universalium

  • Gold — /gohld, gawld/, n. Nanay. /gohld/, n. 1. Herbert, born 1924, U.S. novelist and short story writer. 2. Thomas, born 1920, U.S. astronomer, born in Austria: formulated the steady state theory of the universe. * * * I Metallic chemical element, one… …   Universalium

  • Copper wire and cable — Copper has been used in electric wiring since the invention of the electromagnet and the telegraph in the 1820s.[1][2] The invention of the telephone in 1876 proved to be another early boon for copper wire.[3] Today, despite competition from… …   Wikipedia

  • Copper alloys — are alloys with copper as their principal component. They have high resistance to corrosion.Due to its high electric conductivity, pure electrolytic copper is used mostly for making of electrical cables. Compositions The similarity in external… …   Wikipedia

  • Gold extraction — or recovery from its ores may require a combination of comminution, mineral processing, hydrometallurgical, and pyrometallurgical processes to be performed on the ore. [cite web url=http://geology.com/publications/getting gold/gold… …   Wikipedia

  • Alloy — Al*loy , v. t. [imp. & p. p. {Alloyed}; p. pr. & vb. n. {Alloying}.] [F. aloyer, OF. alier, allier, later allayer, fr. L. aligare. See {Alloy}, n., {Ally}, v. t., and cf. {Allay}.] 1. To reduce the purity of by mixing with a less valuable… …   The Collaborative International Dictionary of English

  • Alloy — Al*loy , n. [OE. alai, OF. alei, F. aloyer, to alloy, alier to ally. See {Alloy}, v. t.] 1. Any combination or compound of metals fused together; a mixture of metals; for example, brass, which is an alloy of copper and zinc. But when mercury is… …   The Collaborative International Dictionary of English

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