Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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The Study on Fabrication and Sound Absorption Properties of Al-Zn-Mg-Cu Alloy Foams

Al-Zn-Mg-Cu 발포합금 제조 및 흡음특성에 관한 연구

  • Jeong, Seung-Reung (i-cube center, ERI, ReCAPT, School of materials science and engineering, Gyeongsang National University) ;
  • Hur, Bo-Young (i-cube center, ERI, ReCAPT, School of materials science and engineering, Gyeongsang National University)
  • 정승룡 (아이큐브 사업단, ERI, ReCAPT, 경상대학교) ;
  • 허보영 (아이큐브 사업단, ERI, ReCAPT, 경상대학교)
  • Received : 2011.05.10
  • Accepted : 2011.06.20
  • Published : 2011.06.30
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Abstract

Metallic foam has been known as a functional material which can be used for absorption properties of energy and sound. The unique characteristics of Al foam of mechanical, acoustic, thermal properties depend on density, cell size distribution and cell size, and these characteristics expected to apply industry field. Al-Zn-Mg-Cu alloy foams was fabricated by following process; firstly melting the Al alloy, thickening process of addition of Ca granule to increased of viscosity, foaming process of addition of titanium hydride powder to make the pores, holding in the furnace to form of cooling down to the room temperature. Metal foams with various porosity level were manufactured by change the foaming temperature. Compressive strength of the Al alloy foams was 2 times higher at 88% porosity and 1.2 times higher at 92% porosity than pure Al foams. It's sound and vibration absorption coefficient were higher than pure Al foams and with increasing porosity.

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References

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