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Surface analysis of ultrafine copper powders

: Baalmann, A.; Schlett, V.

Kaysser, W.A.:
Horizons of powder metallurgy. Proceedings of the 1986 Powder Metallurgy Conference and Exhibition P/M '86
Freiburg/Brsg.: Schmid, 1986
pp.120 ff
International Powder Metallurgy Conference <1986, Düsseldorf>
Conference Paper
Fraunhofer IFAM ()
AES; Ultrafeines Kupferpulver; XPS

Ultrafine copper powders produced by the inert gas evaporation method (particle diameter 10 - 20 nm) were examined by different surface analytical methods. After a contact of the powders with the surrounding atmosphere the following surface structure is formed on the copper surface. A built up of a thin Cu sub 2 O layer takes place, but no generation of CuO. Additionally, the surface is covered with adsorbed oxygen and CO.