Properties and rapid low-temperature consolidation of nanocrystalline Fe-ZrO2 composite by pulsed current activated sintering

Title
Properties and rapid low-temperature consolidation of nanocrystalline Fe-ZrO2 composite by pulsed current activated sintering
Authors
강현수고인용윤진국도정만홍경태손인진
Keywords
Mechanical alloying; composites; nanostructured material; mechanical properties
Issue Date
2011-02
Publisher
Metals and Materials International
Citation
VOL 17, NO 1, 57-62
Abstract
Nanopowders of Fe and ZrO2 were synthesized from Fe2O3 and Zr by high-energy ball milling. The powder sizes of Fe and ZrO2 were 70 nm and 12 nm, respectively. Highly dense nanostructured 4/3Fe-ZrO2 composite was consolidated by a pulsed current activated sintering method within 1 minute from the mechanically synthesized powders (Fe-ZrO2) and horizontal milled Fe2O3+Zr powders under the 1 GPa pressure. The grain sizes of Fe and ZrO2 in the composite were calculated. The average hardness and fracture toughness values of nanostuctured 4/3Fe-ZrO2 composite were investigated.
URI
http://pubs.kist.re.kr/handle/201004/41765
ISSN
1598-9623
Appears in Collections:
KIST Publication > Article
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