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소결 온도와 유지 시간에 따른 Fe-Cr-Al 다공성 금속의 제조 KCI 등재

Fabrication of Fe-Cr-Al Porous Metal with Sintering Temperature and Times

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한국분말야금학회지 (Journal of Korean Powder Metallurgy Institute)
한국분말재료학회(구 한국분말야금학회) (Korean Powder Metallurgy Institute)
초록

The porous metals are known as relatively excellent characteristic such as large surface area, light, lower heat capacity, high toughness and permeability. The Fe-Cr-Al alloys have high corrosion resistance, heat resistance and chemical stability for high temperature applications. And then many researches are developed the Fe-Cr-Al porous metals for exhaust gas filter, hydrogen reformer catalyst support and chemical filter. In this study, the Fe-Cr-Al porous metals are developed with Fe-22Cr-6Al(wt) powder using powder compaction method. The mean size of Fe-22Cr-6Al(wt) powders is about 42.69 μm. In order to control pore size and porosity, Fe-Cr-Al powders are sintered at 1200~1450oC and different sintering maintenance as 1~4 hours. The powders are pressed on disk shapes of 3 mm thickness using uniaxial press machine and sintered in high vacuum condition. The pore properties are evaluated using capillary flow porometer. As sintering temperature increased, relative density is increased from 73% to 96% and porosity, pore size are decreased from 27 to 3.3%, from 3.1 to 1.8 μm respectively. When the sintering time is increased, the relative density is also increased from 76.5% to 84.7% and porosity, pore size are decreased from 23.5% to 15.3%, from 2.7 to 2.08 μm respectively.

목차
Abstract
 1. 서 론
 2. 실험방법
 3. 결과 및 고찰
 4. 결 론
 Acknowledgments
 References
저자
  • 구본욱(울산대학교 첨단소재공학부, 한국기계연구원 부설 재료연구소 분말기술연구실) | Bon-Uk Koo
  • 이수인(고려용접봉 중앙연구소) | Su-in Lee
  • 박다희(한국기계연구원 부설 재료연구소 분말기술연구실) | Dahee Park
  • 윤중열(한국기계연구원 부설 재료연구소 분말기술연구실) | Jung-Yeul Yun Corresponding author
  • 김병기(울산대학교 첨단소재공학부) | Byoung-Kee Kim Corresponding author