Paper Title:

Rapid Consolidation of Nanocrystalline Al2O3 Reinforced Cr Composite from Mechanically Alloyed Powders by Pulsed Current Activated Sintering

Periodical Advanced Materials Research (Volumes 123 - 125)
Main Theme Multi-Functional Materials and Structures III
Edited by Joong Hee Lee
Pages 197-200
DOI 10.4028/www.scientific.net/AMR.123-125.197
Citation In Jin Shon et al., 2010, Advanced Materials Research, 123-125, 197
Online since August, 2010
Authors In Jin Shon, Hyun Su Kang, Dong Mok Lee, Kwon Il Na, In Yong Ko
Keywords Composite Material, Cr-Al2O3, Mechanical Property, Nanophases, Sintering
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Abstract

Nanopowders of Cr and Al2O3 was fabricated from CrO3 and 2Al by high energy ball milling. Dense nanocrystalline Cr-Al2O3 composite was consolidated by pulsed current activated sintering (PCAS) method within 1 min from mechanically alloyed powders. Highly dense Cr-Al2O3 with relative density of up to 99% was produced under simultaneous application of a 80 MPa pressure and the pulsed current. The average grain size and mechanical properties of the composite were investigated.