Aluminium powder
Aluminium powder is powdered aluminium.
This was originally produced by mechanical means using a stamp mill to create flakes. Subsequently, a process of spraying molten aluminium 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.[1]
Aluminium powder, if breathed in, is not particularly harmful and will only cause minor irritation. The melting point of aluminium powder is 660 °C.[2]
Usage
- autoclave aerated concrete
- cosmetic colourant
- fingerprint powder[3]
- metallic paint
- pyrotechnics (including the M-80 firecracker)
- refractory
- rocket and missile fuel such as the solid rocket boosters of the Space Shuttle[4]
- thermite
Depending on the usage, the powder is either coated or uncoated.
See also
References
- ^ Joseph R. Davies (1993), "Powder Metallurgy Processing", Aluminum and Aluminum Alloys, ASM International, p. 275, ISBN 9780871704962
- ^ Friedman, Raymond (1998). Principles of Fire Protection Chemistry and Physics. Jones & Bartlett Learning. ISBN 9780877654407.
- ^ Champod, Christophe; Lennard, Chris J.; Margot, Pierre; Stoilovic, Milutin (2004-04-27). Fingerprints and Other Ridge Skin Impressions. CRC Press. ISBN 9780203485040.
- ^ Space Shuttle Basics –Solid Rocket Boosters, NASA
External links
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