Aluminium powder

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Aluminum pigment powder

Aluminum powder is powdered aluminum. This was originally produced by mechanical means using a stamp mill to create flakes. Subsequently, a process of spraying molten aluminum to create a powder of droplets was developed by E. J. Hall in the 1920s. The resulting powder might then be processed further in a ball mill to flatten it into flakes for use as a coating or pigment. Aluminum powder, if breathed in, is not particularly harmful and will only cause minor irritation.[1] The melting point of aluminum powder is 660 °C.[2]

UsageEdit

  • cosmetic colorant
  • pyrotechnic
  • in paints as metallic silver pigment
  • Fingerprint powder[3]
  • Rocket and missile fuel
  • thermite
  • refractory
  • production of Autoclave aerated concrete.

Depending on the usage, the powder is either coated or uncoated.

See alsoEdit

ReferencesEdit

  1. ^ Joseph R. Davies (1993), "Powder Metallurgy Processing", Aluminum and Aluminum Alloys, ASM International, p. 275, ISBN 9780871704962
  2. ^ Friedman, Raymond (1998). Principles of Fire Protection Chemistry and Physics. Jones & Bartlett Learning. ISBN 9780877654407.
  3. ^ Champod, Christophe; Lennard, Chris J.; Margot, Pierre; Stoilovic, Milutin (2004-04-27). Fingerprints and Other Ridge Skin Impressions. CRC Press. ISBN 9780203485040.

External linksEdit