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

In Jin Shon; Hyun Su Kang; Dong Mok Lee; Kwon Il Na; In Yong Ko

doi:10.4028/www.scientific.net/AMR.123-125.197

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 123-125Rapid Consolidation of Nanocrystalline Al2O3...

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

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.

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Periodical:

Advanced Materials Research (Volumes 123-125)

Pages:

197-200

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.123-125.197

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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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