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e. A metal (from Ancient Greek μέταλλον (métallon) 'mine, quarry, metal') is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically ductile (can be drawn into wires) and malleable (they can be hammered into thin sheets).
The only metal having an ionisation energy higher than some nonmetals (sulfur and selenium) is mercury. [citation needed] Mercury and its compounds have a reputation for toxicity but on a scale of 1 to 10, dimethylmercury ((CH 3) 2 Hg) (abbr. DMM), a volatile colourless liquid, has been described as a 15. It is so dangerous that scientists have ...
Zamak ingot. ZAMAK (or Zamac, formerly trademarked as MAZAK [1]) is a family of alloys with a base metal of zinc and alloying elements of aluminium, magnesium, and copper . Zamak alloys are part of the zinc aluminium alloy family; they are distinguished from the other ZA alloys because of their constant 4% aluminium composition.
A flux pen used for electronics rework. Multicore solder containing flux. Wire freshly coated with solder, held above molten rosin flux. In metallurgy, a flux (from Latin fluxus 'flow') is a chemical cleaning agent, flowing agent, or purifying agent. Fluxes may have more than one function at a time.
Pewter ( / ˈpjuːtər /) is a malleable metal alloy consisting of tin (85–99%), antimony (approximately 5–10%), copper (2%), bismuth, and sometimes silver. [1] In the past it was an alloy of tin and lead, but most modern pewter, in order to prevent lead poisoning, is not made with lead. Pewter has a low melting point, around 170–230 °C ...
M. Medieval European metalwork objects (14 C, 105 P) Metal sculptures (12 C, 24 P) Metal toys (1 C, 12 P) Metalwork in the Metropolitan Museum of Art (29 P) Monstrances (4 P)
Tombac, or tombak, is a brass alloy with high copper content and 5–20% zinc content. [1] Tin, lead or arsenic may be added for colouration. [2] [3] It is a cheap malleable alloy mainly used for medals, ornament, decoration and some munitions . In older use, the term may apply to brass alloy with a zinc content as high as 28–35%.
Aluminium is the most common metal used for deposition, but other metals such as nickel and chromium are also used. The metal is heated and evaporated under vacuum. This condenses on the cold polymer film, which is unwound near the metal vapour source. This coating is much thinner than a metal foil could be made, in the range of 0.5 micrometres.
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