나노 니켈 분말의 가스건 고속압축을 통한 나노결정립니켈 벌크재의 제조 및 물성
Manufacturing and Evaluation of Properties of Nanocrystalline Ni bulk by Dynamic Compaction of Nano Ni powders using a Gas-gun System
0
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
In this study, nanocrystalline nickel powders were cold compacted by a dynamic compaction method usinga single-stage gas gun system. A bending test was conducted to measure the bonding strengths of the compacted regionsand microstructures of the specimen were analyzed using a scanning electron microscopy. The specimen was separatedinto two parts by a horizontal crack after compaction. Density test shows that the powder compaction occurred only inthe upper part of the specimen. Brittle fracture was occurred during the bending test of the compact sample. Dispersionof shock energy due to spalling highly affected the bonding status of the nanocrystalline nickel powder.
Abstract
In this study, nanocrystalline nickel powders were cold compacted by a dynamic compaction method usinga single-stage gas gun system. A bending test was conducted to measure the bonding strengths of the compacted regionsand microstructures of the specimen were analyzed using a scanning electron microscopy. The specimen was separatedinto two parts by a horizontal crack after compaction. Density test shows that the powder compaction occurred only inthe upper part of the specimen. Brittle fracture was occurred during the bending test of the compact sample. Dispersionof shock energy due to spalling highly affected the bonding status of the nanocrystalline nickel powder.
참고문헌 (10)
- M. Long, , Biomaterials, 19, pp.1621~ (1998)
- S. Hironari, , J. Mater. Synth. Process., 6, pp.415~ (1998)
- E. Antolini, , J. Mater. Sci., 31, pp.2187~ (1996)
- L. N. Lewis, , Chem. Rev., 93, pp.2693~ (1993)
- L. L. Beecroft, , Chem. Mater., 9, pp.1302~ (1997)
- A. Mukhopadhyay, , Inter. Mater. Rev., 52, pp.257~ (2007)
- T. Chen, , Acta Mater., 47, pp.2567~ (1999)
- Z. Q. Jin, , Acta Mater., 52, pp.2147~ (2004)
- H. N. Kim, , Int. J. Mod. Phys. B, 22, pp.1686~ (2008)
- J. R. Brown, , J. Phys. E: Sci. Instrum., 22, pp.771~ (1989)