경사 다공성 Al-Cu 소결체의 제조
Fabrication of Gradient Porous Al-Cu Sintered Body
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In this study, gradient porous Al-Cu sintered body was fabricated by powder metallurgy processing. Al-Cu powder mixtures were prepared by low energy ball milling with various milling time. After ball milling for 3h, the shape of powder mixtures changed to spherical type with size of 100~500 μm. Subsequently, Al-Cu powder mixtures were classified (under 150, 150~300 and over 300 μm) and compacted (20, 50 and 100 MPa). Then,they were sintered at 600℃ for various holding time (10, 30, 60 and 120 min) in N2 atmosphere. The sintered bodies had 32~45% of porosity. As a result, the optimum holding time was determined to be 60 min at 600℃ and sintered bodies with various porosity were obtained by controlling the compacting pressure.
Abstract
In this study, gradient porous Al-Cu sintered body was fabricated by powder metallurgy processing. Al-Cu powder mixtures were prepared by low energy ball milling with various milling time. After ball milling for 3h, the shape of powder mixtures changed to spherical type with size of 100~500 μm. Subsequently, Al-Cu powder mixtures were classified (under 150, 150~300 and over 300 μm) and compacted (20, 50 and 100 MPa). Then,they were sintered at 600℃ for various holding time (10, 30, 60 and 120 min) in N2 atmosphere. The sintered bodies had 32~45% of porosity. As a result, the optimum holding time was determined to be 60 min at 600℃ and sintered bodies with various porosity were obtained by controlling the compacting pressure.
참고문헌 (21)
- Y. M. Kong, , Trends in Met. & Mater. Eng, 23(4) (2010)
- J. Banhart, , Prog. Mater. Sci, 46, pp.559~ (2001)
- H. Nakajima, , Prog. Mater. Sci, 52, pp.1091~ (2007)
- M. F. Ashby, "Metal Foams: a design guide" (2000), Butterworth-Heinemann College
- K. I. Salas, , J. Heat Transfer, 129, pp.1217~ (2007)
- B. Y. Hur, , Trends in Met. & Mater. Eng, 20, pp.32~ (2007)
- H. Bray, , Eng. Mater. Des, 16, pp.19~ (1972)
- D. C. Dilley, , Mach. Prod. Eng, 125, pp.24~ (1974)
- G. J. Davies, , J. Mater. Sci, 18, pp.1899~ (1983)
- L. J. Gibson, "Cellular Solids" (1997), Cambridge University Press
- K. Siziki, , Eng. Mater, 30, pp.104~ (1982)
- P. Y. Huang, "Principles of Powder Metallurgy" (1997), Metallurgical Industry Press
- H. P. Tang, , Rare Metal Mat. Eng, 26, pp.1~ (1997)
- I. J. Polmear, "Light Alloys" (1981), Arnold
- B. P. Lee, , J. Korean Powder Metall. Inst, 18, pp.95~ (2011)
- N. Michailidis, , Adv. Eng. Mater, 13, pp.29~ (2011)
- 송준우, "고에너지 밀링공정을 이용한 조대 마그네슘 분말의 미세화 거동", 한국분말야금학회지, 17(4), pp.302~311 (2010), 한국분말야금학회
- D. R. Lide, "CRC Handbook of chemistry and physics" (1995), CRC Press
- K. H. Min, , J. Alloy Comd, 419, pp.290~ (2006)
- G. B. Schaffer, , Mater. Chem. Phys, 67, pp.85~ (2001)