Abstract
Ti(C,N) solid solutions in hot-pressed Ti(<TEX>$C_{x}N_{1-x}$</TEX>) (x=0.0, 0.3, 0.5, 0.7, 1.0) and 40TiC-40TiN-20Ni (in wt.%) cermet were characterized in this study. For hot-pressed Ti(C,N)s, the lattice parameters and hardness values of Ti(C,N) were determined by using XRD (X-Ray Diffraction) and nanoindentation. The properties of hot-pressed Ti(C,N) samples changed linearly with their carbon or nitrogen contents. For the TiC-TiN-Ni cermet, the hardness of the hard phase and binder phase were determined by nanoindentation in conjunction with microstructural observation. The measured hardness values were <TEX>${\sim}8.7$</TEX> GPa for the binder phase and <TEX>${\sim}28.7$</TEX> GPa for the hard phase, which was close to the hardness of hot-pressed Ti(<TEX>$C_{0.7}N_{0.3}$</TEX>).
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