Fabrication and mechanical properties of nanostructured TiC-TiAl by the pulsed current activated sintering

Title
Fabrication and mechanical properties of nanostructured TiC-TiAl by the pulsed current activated sintering
Authors
홍경태윤진국곽봉원김병수손인진
Keywords
Composites; Nanomaterials; Sintering; Hardness; Fracture toughness
Issue Date
2016-08
Publisher
대한금속 . 재료학회지; Korean journal of metals and materials
Citation
VOL 54, NO 8-572
Abstract
TiC-Co or TiC-Ni hard materials have been used for cutting tools. However, the high cost and the low hardness of Ni or Co, and the low corrosion resistance of the TiC-Ni and TiC-Co cermets have generated interest in recent years in using them as alternative binder phases. In this study, TiAl was used as a novel binder and consolidated by the pulsed current activated sintering(PCAS) method. Nanopowders of TiC and TiAl were fabricated using high energy ball milling. Highly dense TiC-TiAl hard materials with a relative density of up to 99.5% were sintered within three min by PCAS. Not only the hardness but also the fracture toughness of the TiC-10 vol%TiAl were better than those of TiC-10 vol%Ni or TiC-10 vol%Co.
URI
http://pubs.kist.re.kr/handle/123456789/64724
ISSN
1738-8228
Appears in Collections:
KIST Publication > Article
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