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Ti(C,N) solid solutions in hot-pressed Ti(C x N 1-x ) (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 hardnessvalues of Ti(C,N) were determined by using XRD (X-Ray Diffraction) and nanoindentation. The properties ofhot-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 micro-structural observation. The measured hardness values were ~8.7 GPa for the binder phase and ~28.7 GPa for thehard phase, which was close to the hardness of hot-pressed Ti(C 0.7 N 0.3 ). Keywords : Ti(C, N), Solid solution, Cermet, Hardness, Nanoindentation 1.     , ,     Ti(C,N)   (WC-Co)  [1-3]. · (Hard phase) Ni, Co (Binder phase)    /(Core/rim structure)   .  (Core)     Ti(C,N)  (Rim  surroundingstructure)   (Ti,W, Nb)(C,N) .   (Interfacialenergy)[4],    (Strain)[5], (Liquid film migration)[6]        .TiC TiN  Ti(C,N)      (B1, NaCl ) ( )     [7-9]. , TiC, TiN  Ti(C,N)  B1       (Nonstoichiometric compound) [10, 11]. TiC-TiN-Ni  [12]  Ti(C,N)  TiN   Ti(C,N) Ni       .*Corresponding Author : [Tel : +82-31-645-1452; E-mail : woods3@kicet.re.kr]

Characterization of Ti(C,N) Solid Solutions in Densified Ti(C,N) and TiC-TiN-Ni Cermet