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Consolidation of Nano-Crystalline Copper Powder by Cold and Hot Pressing
A. Saleh,S. Heshmati-Manesh,S. Sheibani,A. Ataie 대한금속·재료학회 2011 METALS AND MATERIALS International Vol.17 No.5
This paper investigates preparation of bulk nano-structured Cu through cold and hot pressing. In particular,the effects of different consolidation parameters, such as temperature and pressure, on the properties of bulk nano-structured samples were studied. Microstructure, density, hardness, and electrical conductivity showed strong dependence on the consolidation parameters. All results were compared with those for micron-size Cu powder. Relatively fully dense compacts with minimal grain growth up to 57 nm, maximum hardness of 83 Vickers, and electrical resistivity of 1.93 × 10^(−8)Ω.m could be achieved.