Properties of nanostructured TiCN and TiCN-TiAl hard materials sintered by the high-frequency induction-heating

Title
Properties of nanostructured TiCN and TiCN-TiAl hard materials sintered by the high-frequency induction-heating
Authors
손인진강현수두송이황준연이재원
Keywords
Nanomaterials; Sintering; Hardness; Fracture toughness; Hard materials
Issue Date
2013-10
Publisher
Materials transactions
Citation
VOL 54, NO 10, 2069-2074
Abstract
In the case of cemented TiCN, Ni or Co is added as a binder for the formation of composite structures. However, the high cost of Ni or Co and the low corrosion resistance of the TiCN-Ni cermet have generated interest in recent years for alternative binder phases. In this study, TiAl was used as a binder and consolidated by the high-frequency induction heated sintering (HFIHS) method. Highly dense TiCNTiAl with a relative density of up to 100% was obtained within 2 min by HFIHS under a pressure of 80 MPa. The method was found to enable not only the rapid densification but also the inhibition of grain growth preserving the nano-scale microstructure. The average grain sizes of the sintered TiCN and TiCN-TiAl were lower than 100 nm. The addition of TiAl to TiCN enhanced the hardness and toughness due to increase of relative density.
URI
http://pubs.kist.re.kr/handle/201004/45942
ISSN
13459678
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KIST Publication > Article
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