Transition metal carbides (TMCs) are used to process difficult-to-cut materials due to the trend of requiring superior wear and corrosion properties compared to those of cemented carbides used in the cutting industry. In this study, TMC (TiC, TaC, Mo2C, and NbC)-based cermets were consolidated by spark plasma sintering at 1,300 oC (60 oCmin) with a pressure of 60 MPa with Co addition. The sintering behavior of TMCs depended exponentially on the function of the sintering exponent. The Mo2C-6Co cermet was fully densified, with a relative density of 100.0 %. The Co-binder penetrated the hard phase (carbides) by dissolving and re-precipitating, which completely densified the material. The mechanical properties of the TMCs were determined according to their grain size and elastic modulus: TiC-6Co showed the highest hardness of 1,872.9 MPa, while NbC-6Co showed the highest fracture toughness of 10.6 MPa*m1/2. The strengthened grain boundaries due to high interfacial energy could cause a high elastic modules; therefore, TiC-6Co showed a value of 452 ± 12 GPa.

Abstract
1.서 론
2. 실험 방법
3. 결과 및 고찰
4.결 론
References

• 홍성길(전남대학교 신소재공학부) | Sung-Kil Hong (Chonnam National University, Materials Science & Engineering, 77, Yong-bongro, Buk-gu, Gwang-Ju, 61186, Republic of Korea) Corresponding author
• 박현국(한국생산기술연구원 동력소재부품연구그룹) | Hyun-Kuk Park (Korea Institute of Industrial Technology (KITECH), Automobile Materials and Components R&D Group, 6 Cheomdan-gwagiro 208 beon-gil, Buk-gu, Gwang-Ju 61012, Republic of Korea)
• 이정한(한국생산기술연구원 동력소재부품연구그룹) | Jeong-Han Lee (Korea Institute of Industrial Technology (KITECH), Automobile Materials and Components R&D Group, 6 Cheomdan-gwagiro 208 beon-gil, Buk-gu, Gwang-Ju 61012, Republic of Korea)