Effect of Secondary Carbide Addition on Properties of Ti(C_0.7N_0.3)-Ni Cermets

Abstract:

The effect of WC or NbC addition on various properties of Ti(C0.7N0.3)-Ni cermets was investigated. The microstructure of Ti(C0.7N0.3)-xWC-20Ni showed a typical core/rim structure, irrespective of the WC content, whereas the structure of Ti(C0.7N0.3)-xNbC-20Ni was different and was dependent on the NbC content. The hardness (HV) and the fracture toughness (KIC) had a tendency to increase marginally, while the coercive force (HC) and the magnetic saturation (4πσ) decreased gradually with an increase in WC or NbC content in the systems studied. In addition, increasing WC content in Ti(C0.7N0.3)-xWC-20Ni system, decarburization was retarded, while denitrification was accelerated.

• Periodical: Materials Science Forum (Volumes 534-536)
• Pages: 1165-1168
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.534-536.1165
• Online since: January 2007
• Authors: Sun Yong Ahn, H. Kim, Shin Hoo Kang
• Keywords: Cermet, Microstructure, Secondary Carbide, Ti(C,N)

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