Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
권호 표지

Effect of Secondary Carbide Addition on Properties of $Ti(C_{0.7}N_{0.3})-Ni$ Cermets

  • Ahn, S. (Production Engineering Research Center, Korloy Inc.) ;
  • Kim, H. (Production Engineering Research Center, Korloy Inc.) ;
  • Kang, S. (School of Materials Science & Engineering, Seoul National University)
  • Published : 2006.09.24
Download PDF
⟨ Previous Next ⟩

Abstract

The effect of WC or NbC addition on various properties of Ti(C0.7N0.3)-Ni cermets was investigated. The microstructure oj Ti(C0.7N0.3)-xWC-20Ni showed a typical core/rim structure, irrespective of the WC content, whereas the structure oj 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 $(4{\pi}{\sigma})$ 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

Keywords