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FABRICATION OF POROUSTi- ANDW-COMPACTS BY ELECTRO-DISCHARGE-SINTERING PROCESS

Author

Listed:
  • GI-AN SONG

    (Department of Advanced Materials Engineering, Sejong University, Gwangjin-gu, Gunja-dong, 143-747 Seoul, South Korea)

  • JI-SEON SHIN

    (Department of Advanced Materials Engineering, Sejong University, Gwangjin-gu, Gunja-dong, 143-747 Seoul, South Korea)

  • TAE-JU KANG

    (Department of Advanced Materials Engineering, Sejong University, Gwangjin-gu, Gunja-dong, 143-747 Seoul, South Korea)

  • HAN SHIN CHOI

    (Advanced Materials Division, Korea Institute of Industrial Technology (KITECH), Dongchon-dong, Yeonsu-gu, 463-130 Incheon, South Korea)

  • JIN KYU LEE

    (Advanced Materials Division, Korea Institute of Industrial Technology (KITECH), Dongchon-dong, Yeonsu-gu, 463-130 Incheon, South Korea)

  • MIN HA LEE

    (Advanced Materials Division, Korea Institute of Industrial Technology (KITECH), Dongchon-dong, Yeonsu-gu, 463-130 Incheon, South Korea)

  • TAEK SOO KIM

    (Advanced Materials Division, Korea Institute of Industrial Technology (KITECH), Dongchon-dong, Yeonsu-gu, 463-130 Incheon, South Korea)

  • WON HEE LEE

    (Department of Advanced Materials Engineering, Sejong University, Gwangjin-gu, Gunja-dong, 143-747 Seoul, South Korea)

  • KI BUEM KIM

    (Department of Advanced Materials Engineering, Sejong University, Gwangjin-gu, Gunja-dong, 143-747 Seoul, South Korea)

Abstract

A single pulse of 0.57–1.1 kJ/0.3 g-sphericalTi-powder in size range of 30–70 μm, using a constant 450 μF capacitor, was applied to produce fully porousTi- andW-compacts by electro-discharge sintering. Microstructure examination and hardness measurement of the porousTi-compacts revealed that more stable necks formed with increasing electrical input energy up to 1.1 kJ. On the contrary,W-compacts using rectangularW-powders in size range of 5–15 μm are composed of solid region with micropore and porous layer with weak particle bonding indicating heterogeneous structure. These results suggest that the powder morphology plays a crucial role to control the porous microstructure.

Suggested Citation

  • Gi-An Song & Ji-Seon Shin & Tae-Ju Kang & Han Shin Choi & Jin Kyu Lee & Min Ha Lee & Taek Soo Kim & Won Hee Lee & Ki Buem Kim, 2010. "FABRICATION OF POROUSTi- ANDW-COMPACTS BY ELECTRO-DISCHARGE-SINTERING PROCESS," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 17(02), pages 245-250.
    • Handle: RePEc:wsi:srlxxx:v:17:y:2010:i:02:n:s0218625x10014004
    DOI: 10.1142/S0218625X10014004
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