RT Journal Article
SR Electronic
A1 Marek, Ivo
A1 Michalcova, Alena
A1 Vojtech, Dalibor
T1 Properties of metallic nanocrystalline powders
JF Manufacturing Technology Journal
YR 2013
VO 13
IS 3
SP 353
OP 358
DO 10.21062/ujep/x.2013/a/1213-2489/MT/13/3/353
UL https://journalmt.com/artkey/mft-201303-0019.php
AB Nanocrystalline metals are advanced materials with structural constituents smaller than 100 nm. With respect to structure, they are characterized by high strength and hardness, gas absorption capability, high specific surface area, catalytic activity or magnetic properties. These properties predispose them for using in wide spectrum of possible applications, namely advanced structural and functional applications, biomedicine, catalysis or electronics. Many methods have been developed for producing nanocrystalline metals or nanocrystalline metallic powders including precipitation from supersaturated liquids, severe plastic deformation, cryo-melting, or inert gas condensation. In this work, another promising method - selective dissolving of aluminium alloy was successfully appliedfor preparation of nanocrystalline copper powder and this powder was consequently used for producing of bulk nanocrystalline material with enhanced hardness and strength.