- 펄스전류 가열에 의한 나노구조의 (Ti,Mo)C 합성과 동시 급속소결 및 기계적 성질
- ㆍ 저자명
- 조형곤,권한중,손인진,Jo. Hyoung-Gon,Kwon. Hanjung,Shon. In-Jin
- ㆍ 간행물명
- 한국재료학회지
- ㆍ 권/호정보
- 2013년|23권 11호|pp.620-624 (5 pages)
- ㆍ 발행정보
- 한국재료학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
Nanocrystalline materials have recently received significant attention in the area of advanced materials engineering due to their improved physical and mechanical properties. A solid-solution nanocrystalline powder, (Ti,Mo)C, was prepared via high-energy milling of Ti-Mo alloys with graphite. Using XRD data, the synthesis process was investigated in terms of the phase evolution. Rapid sintering of nanostuctured (Ti,Mo)C hard materials was performed using a pulsed current activated sintering process (PCAS). This process allows quick densification to near theoretical density and inhibits grain growth. A dense, nanostructured (Ti,Mo)C hard material with a relative density of up to 96 % was produced by simultaneous application of 80 MPa and a pulsed current for 2 min. The average grain size of the (Ti,Mo)C was lower than 150 nm. The hardness and fracture toughness of the dense (Ti,Mo)C produced by PCAS were also evaluated. The fracture toughness of the (Ti,Mo)C was higher than that of TiC.