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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.57  No.5 (2016)  >  pp.691-694

MATERIALS TRANSACTIONS
<<Previous article Vol.57  No.5 (2016)   pp.691 - 694 Next article>>

Enhanced Mechanical Properties of Nanostructured 2.25CoAl-Al2O3 Composite Sintered by Pulsed Current Activated Heating

Bong-Won Kwak1), Byung-Su Kim2), In-Jin Shon1)
1) Division of Advanced Materials Engineering and the Research Center of Advanced Materials Development, Engineering College, Chonbuk National University 2) Minerals Resources Research Division, Korea Institute of Geoscience and Mineral Resources

The nanopowders of CoAl and Al2O3 were synthesized from Co3O4 and Al powders using high energy ball milling. The nanostructured 2.25CoAl-Al2O3 composite from the milled powder was consolidated within two min by the pulsed current activated sintering. The mechanical properties and microstucture of the nanostructured 2.25CoAl-Al2O3 was investigated from the view points of using Vickers hardness measurement, X-ray diffraction analysis and FE-SEM observation.


Keyword:
composite, nanostructure, hardness, fracture toughness, sintering

Received: November 12, 2015
Accepted: February 15, 2016 , Published online: April 25, 2016

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