Properties of nanostructured TiCN and TiCN-TiAl hard materials sintered by the high-frequency induction-heating
- Properties of nanostructured TiCN and TiCN-TiAl hard materials sintered by the high-frequency induction-heating
- 손인진; 강현수; 두송이; 황준연; 이재원
- Nanomaterials; Sintering; Hardness; Fracture toughness; Hard materials
- Issue Date
- Materials transactions
- VOL 54, NO 10, 2069-2074
- 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.
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