Simultaneous synthesis and consolidation of a nanocrystalline 17.14Fe0.7Cr0.2Al0.1-Si3N4 composite by pulsed current activated sintering

Title
Simultaneous synthesis and consolidation of a nanocrystalline 17.14Fe0.7Cr0.2Al0.1-Si3N4 composite by pulsed current activated sintering
Authors
손인진두송이송철규도정만윤진국박상환
Keywords
Nanostructured materials; Sintering; Synthesis; Hardness; Composite materias
Issue Date
2012-01
Publisher
Journal of ceramic processing research
Citation
VOL 13, NO 1, 71-75
Abstract
Nanopowders of Fe3N, Cr, Si and Al powders were fabricated by high-energy ball milling. A high-density nanocrystalline 17.14Fe0.7Cr0.2Al0.1-Si3N4 composite was simultaneously synthesized and consolidated by a pulsed current activated sintering (PCAS) method within two minutes from mechanically activated powders of Fe3N, Cr, Si and Al. The advantage of this process is that it allows very quick densification to near theoretical density and prohibits grain growth in nano-structured materials. The hardness of the composite was about 430 kg/mm2.
URI
http://pubs.kist.re.kr/handle/201004/42068
ISSN
12299162
Appears in Collections:
KIST Publication > Article
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