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Korean Journal of Metals and Materials > Volume 55(3); 2017 > Article
Korean Journal of Metals and Materials 2017;55(3): 179-183. doi: https://doi.org/10.3365/KJMM.2017.55.3.179
그래핀 첨가가 TiN 기계적 성질에 미치는 영향
손인진1,*, 윤진국2, 홍경태2
1전북대학교 신소재공학부 신소재개발연구소
2한국과학기술연구원 물질구조제어연구센터
Effect of Graphene Addition on Mechanical Properties of TiN
In-Jin Shon1,*, Jin-Kook Yoon2, Kyung-Tae Hong2
1Division of Advanced Materials Engineering, the Research Center of Hydrogen Fuel Cell, Chonbuk National University, Jeonju 54896, Republic of Korea
2Materials Architecturing Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
Correspondence  In-Jin Shon ,Tel: +82-63-270-2381, Email: ijshon@chonbuk.ac.kr
Received: 13 June 2016;  Accepted: 24 August 2016.  Published online: 3 March 2017.
Despite of many attractive properties of TiN, the current concern about the TiN focuses on its low fracture toughness below the ductile-brittle transition temperature. To improve its mechanical properties, the approach generally utilized has been the addition of a second phase to form composites and to make nanostructured materials. In this respect, highly dense nanostructured TiN and TiN-graphene composites were obtained within two min at 1250 ℃. The grain size of TiN was reduced remarkably by the addition of graphene. The addition of graphene to TiN simultaneously improved the fracture toughness and hardness of TiN-graphene composite due to refinement of TiN and deterring crack propagation by graphene. This study demonstrates that the graphene can be an effective reinforcing agent for improved hardness and fracture toughness of TiN composites.
Keywords: sintering, composite materials, nanomaterials, mechanical properties
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