자기펄스 압축성형법에 의한 다이아몬드 공구용 세그먼트 분말 성형
Consolidation of Segment Powder for Diamond Tool byMagnetic Pulsed Compaction
0
조회
0
다운로드
3
인용
0
참고문헌
키워드
초록
This article presents the successful consolidation of the mixed Co and Diamond powders for a drilling segment by the combined application of magnetic pulsed compaction (MPC) and subsequent sintering, and their properties were analyzed. Homogeneous hardness (Hv 220) and density (97%) of sintered bulks fabricated by MPC were obtained by the new technique, where higher pressure has been employed for short period of time than that of general process. A fine microstructure and homogeneous hardness in the consolidated bulk were observed without cracks. Relatively higher drilling speed of 9.61 cm/min and life time of 6.55 m were found to the MPCed specimens, whereas the value of the specimens fabricated by general process was 11.71 cm/min and 7.96 m, respectively. A substantial improvement of mechanical properties of segment was achieved through this study.
Abstract
This article presents the successful consolidation of the mixed Co and Diamond powders for a drilling segment by the combined application of magnetic pulsed compaction (MPC) and subsequent sintering, and their properties were analyzed. Homogeneous hardness (Hv 220) and density (97%) of sintered bulks fabricated by MPC were obtained by the new technique, where higher pressure has been employed for short period of time than that of general process. A fine microstructure and homogeneous hardness in the consolidated bulk were observed without cracks. Relatively higher drilling speed of 9.61 cm/min and life time of 6.55 m were found to the MPCed specimens, whereas the value of the specimens fabricated by general process was 11.71 cm/min and 7.96 m, respectively. A substantial improvement of mechanical properties of segment was achieved through this study.
참고문헌 (9)
- "Ralf Riedel Handbook of Ceramic Hard Materials", pp.527~549, Wiley-VCH New-York
- V. Blank, , Dianmond Realt.Mater, 8, pp.1531~ (1999)
- H. W. Lee, "Doctor Thesis" (2003), Hongik University
- D. Dwan, , Mater. Sci. Tech, 40, pp.225~ (1998)
- G. H. Lee, , J. Kor. Inst. Met. & Mater, 9(4), pp.425~ (2003)
- B. H. Rabin, , J. Am. Ceram. Soc, 73, pp.2156~ (1990)
- J. K. Lee, , J. Korean Powder Metall. Inst, 12(5), pp.345~ (2005)
- R. C. Kang, , J. Korean Powder Metall. Inst, 15(1), pp.37~ (2008)
- H. W. Lee, , J. Kor. Ceram. Soc, 37, pp.1072~ (2000)