- Characterization of Ti(C,N) Solid Solutions in Densified Ti(C,N) and TiC-TiN-Ni Cermet
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Seong-Won Kim, Jung-Min Chae, Shin-Hoo Kang, Sung-Soo Ryu, Hyung-Tae Kim
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J Korean Powder Metall Inst. 2008;15(6):503-508.
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DOI: https://doi.org/10.4150/KPMI.2008.15.6.503
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- Ti(C,N) solid solutions in hot-pressed Ti(C_xN_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 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 sim8.7 GPa for the binder phase and sim28.7 GPa for the hard phase, which was close to the hardness of hot-pressed Ti(C_0.7N_0.3).
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Citations to this article as recorded by  - Sintering Behavior and Mechanical Property of Transition Metal Carbide-Based Cermets by Spark Plasma Sintering
Jeong-Han Lee, Hyun-Kuk Park, Sung-Kil Hong
Korean Journal of Materials Research.2022; 32(1): 44. CrossRef
- Measurement of Hardness of Constituent Phases in Ti(C0.7N0.3)-NbC-Ni Cermets Using Nanoindentation
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Seong-Won Kim, Dae-Min Kim, Shin-Hoo Kang, Sung-Soo Ryu, Hyung-Tae Kim
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J Korean Powder Metall Inst. 2008;15(6):482-488.
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DOI: https://doi.org/10.4150/KPMI.2008.15.6.482
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Abstract
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- The indentation technique has been one of the most commonly used techniques for the measurement of the mechanical properties of materials due to its experimental ease and speed. Recently, the scope of indentation has been enlarged down to the nanometer range through the development of instrumentations capable of continuously measuring load and displacement. In addition to testing hardness, the elastic modulus of submicron area could be measured from an indentation load-displacement (P-h) curve. In this study, the hardness values of the constituent phases in Ti(C_0.7N_0.3)-NbC-Ni cermets were evaluated by nanoindentation. SEM observation of the indented surface was indispensable in order to separate the hardness of each constituent phase since the Ti(C_0.7N_0.3)-based cermets have relatively inhomogeneous microstructure. The measured values of hardness using nanoindentation were sim20 GPa for hard phase and sim10 GPa for binder phase. The effect of NbC addition on hardness was not obvious in this work.
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