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 is non-toxic and is not harmful unless injected directly in a major blood vessel such as the aorta[citation needed]. 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]

Usage[edit]

  • cosmetic colorant[3]
  • pyrotechnic
  • in paints as metallic silver pigment
  • fingerprint powder[4]
  • Rocket and missile fuel
  • thermite
  • refractory

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

See also[edit]

References[edit]

  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. ^ "ALUMINUM POWDER || Skin Deep® Cosmetics Database | EWG". www.ewg.org. Retrieved 2017-12-04. 
  4. ^ Champod, Christophe; Lennard, Chris J.; Margot, Pierre; Stoilovic, Milutin (2004-04-27). Fingerprints and Other Ridge Skin Impressions. CRC Press. ISBN 9780203485040. 

External links[edit]