Archives of Metallurgy and Materials

Institute of Metallurgy and Materials Science of Polish Academy of Sciences
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EFFECT OF POWDER SHAPE AND SINTERING TEMPERATURE ON THE PREPARATION OF Ni-BASED POROUS METAL

  • YU-JEONG YI (KOREA INSTITUTE OF MATERIALS SCIENCE (KIMS), METAL POWDER DEPARTMENT) ;
  • MIN-JEONG LEE (KOREA INSTITUTE OF MATERIALS SCIENCE (KIMS), METAL POWDER DEPARTMENT) ;
  • HYEON-JU KIM (KOREA INSTITUTE OF MATERIALS SCIENCE (KIMS), METAL POWDER DEPARTMENT) ;
  • SANGSUN YANG (KOREA INSTITUTE OF MATERIALS SCIENCE (KIMS), METAL POWDER DEPARTMENT) ;
  • MANHO PARK (R&D CENTER, ASFLOW CO. LTD) ;
  • BYOUNG-KEE KIM (UNIVERSITY OF ULSAN, DEPARTMENT OF MATERIALS SCIENCE AND ENGINEERING) ;
  • JUNG-YEUL YUN (KOREA INSTITUTE OF MATERIALS SCIENCE (KIMS), METAL POWDER DEPARTMENT)
  • Published : 20190000
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Abstract

Usually porous metals are known as relatively excellent characteristic such as large surface area, light, lower heat capacity, high toughness and permeability for exhaust gas filter, hydrogen reformer catalyst support. The Ni alloys have high corrosion resistance, heat resistance and chemical stability for high temperature applications. In this study, the Ni-based porous metals have been developed with Hastelloy powder by gas atomization and water atomization in order to find the effects of powder shape on porous metal. Each Hastelloy powder is pressed on disk shape of 2 mm thickness with 12 tons using uniaxial press machine. The specimens are sintered at various temperatures in high vacuum condition. The pore properties were evaluated using Porometer and microstructures were observed with SEM.

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Acknowledgement

This study was supported financially by Fundamental Research Program (PNK6040) of the Korean Institute of Materials Science (KIMS) and by a grant from the Fundamental R&D Program for Strategic Core Technology of Materials funded by the Ministry of Trade, Industry & Energy, Republic of Korea.