Atomistic Simulation of Sintering Mechanism for Copper Nano-Powders
2
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The sintering mechanisms of nanoscale copper powders have been investigated. A molecular dynamics (MD) simulation with the embedded-atom method (EAM) was employed for these simulations. The dimensional changes for initial-stage sintering such as characteristic lengths, neck growth, and neck angle were calculated to understand the densification behavior of copper nano-powders. Factors affecting sintering such as the temperature, powder size, and crystalline misalignment between adjacent powders have also been studied. These results could provide information of setting the processing cycles and material designs applicable to nano-powders. In addition, it is expected that MD simulation will be a foundation for the multi-scale modeling in sintering process.
Abstract
The sintering mechanisms of nanoscale copper powders have been investigated. A molecular dynamics (MD) simulation with the embedded-atom method (EAM) was employed for these simulations. The dimensional changes for initial-stage sintering such as characteristic lengths, neck growth, and neck angle were calculated to understand the densification behavior of copper nano-powders. Factors affecting sintering such as the temperature, powder size, and crystalline misalignment between adjacent powders have also been studied. These results could provide information of setting the processing cycles and material designs applicable to nano-powders. In addition, it is expected that MD simulation will be a foundation for the multi-scale modeling in sintering process.
참고문헌 (15)
- H. Zhu, , Mater. Sci. Eng., 204, pp.96~ (1995)
- J. S. Raut, , Nanostruct. Mater., 10, pp.837~ (1998)
- P. Zeng, , Mater. Sci. Eng., 252, pp.301~ (1998)
- A. J. Haslam, , Mater. Sci. Eng., 318, pp.293~ (2001)
- V. Yamakov, , Acta Mater., 54, pp.4053~ (2006)
- A. Moitra, , Acta Mater., 58, pp.3939~ (2010)
- F. Hussain, , Comput. Mater. Sci., 65, pp.264~ (2012)
- B. Cheng, , Int. J. Plast, 47, pp.65~ (2013)
- M. S. Daw, , Phys. Rev. B, 29, pp.6443~ (1984)
- M. S. Daw, , Mater. Sci. Rep., 9, pp.251~ (1993)
- "LAMMPS MD simulator"[URL]
- Y. Mishin, , Phys. Rev. B, 63, pp.224106~ (2001)
- R. M. German, "Powder metallurgy and particulate materials processing: the processes, materials, products, properties, and applications" (2005), Metal Powder Industries Federation
- Y. Mishin, , Mater. Sci. Eng., 260, pp.55~ (1999)
- M. A. Tschopp, , Phil. Mag., 87, pp.3871~ (2007)