Growth of Aluminium Whiskers by Vapour Condensation

Details Growth of Aluminium Whiskers by Vapour Condensation Growth of Aluminium Whiskers by Vapour Condensation

Apr 1962

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1962natur.194..272b&link_type=abstract

Nature, Volume 194, Issue 4825, pp. 272-273 (1962).

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WHISKERS of volatile metals such as zinc1,2 and cadmium2,3 have been grown by vapour condensation methods; but whiskers of other metals have mostly been produced by chemical reduction4,5. Aluminium presents particular problems because its compounds are resistant to reduction and because the vapour pressure at its melting point is very small (by extrapolation 1.0 × 10-43 mm. mercury). At higher temperatures where there is an appreciable vapour pressure the metal is extremely reactive, and even contact with alumina leads to the formation of a sub-oxide. The work reported here shows that it is nevertheless possible to produce aluminium whiskers by a vapour condensation method using high supersaturations.

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