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Ultrafine microstructures by powder metallurgical methods.

Ultrafeine Mikrostrukturen durch pulvermetallurgische Methoden
: Günther, B.; Kunze, H.-D.

Bamberger, M.; Schorr, M. ; Technion, Israel Institute of Technology, Haifa:
5th Israel Materials Engineering Conference 1990
London: Freund, 1991
Israel Materials Engineering Conference (IMEC) <5, 1990, Haifa>
Fraunhofer IFAM ()

Metallic and ceramic dense nanocrystalline (nc-)materials with grain sizes ranging form 5 to 100 nm may be produced by using nano-dispersed, i.e. highly sinter-active starting powders. It is the extremly high grain-/phase-boundary area that determines the unusual properties of the resultant PM-components. The various suitable PM-methods for the production of pure as well as composite nc-materias are shortly reviewed including the sol-gel process, mechanical alloying and the inert gas evaporation method. Some of the faszinating potentials of PM-fabricated nc-materials in due to their peculiar magnetic, elctronic and mechanical behaviour are elucidated.