경사 다공성 Al-Cu 소결체의 제조Fabrication of Gradient Porous Al-Cu Sintered Body
- Other Titles
- Fabrication of Gradient Porous Al-Cu Sintered Body
- Authors
- 변종민; 김세훈; 김진우; 김영문; 김영도
- Issue Date
- Aug-2011
- Publisher
- 한국분말야금학회
- Keywords
- Sintering; Al-Cu powder; Porous body; Gradient structure
- Citation
- 한국분말야금학회지, v.18, no.4, pp.365 - 371
- Indexed
- KCI
- Journal Title
- 한국분말야금학회지
- Volume
- 18
- Number
- 4
- Start Page
- 365
- End Page
- 371
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/167804
- DOI
- 10.4150/KPMI.2011.18.4.365
- ISSN
- 1225-7591
- 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.
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