Fabrication of Lotus-Type Porous Copper-Aluminum Alloy by Unidirectional Solidification in Hydrogen Atmosphere

Soong Keun Hyun; Tsuyoshi Awadu; Teruyuki Ikeda; Hideo Nakajima

doi:10.4028/www.scientific.net/MSF.539-543.1898

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HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Fabrication of Lotus-Type Porous Copper-Aluminum...

Fabrication of Lotus-Type Porous Copper-Aluminum Alloy by Unidirectional Solidification in Hydrogen Atmosphere

Abstract:

Lotus-type porous Cu-5at.%Al alloy whose elongated pores are aligned in one direction was fabricated by unidirectional solidification in pressurized hydrogen gas atmosphere. The porosity of the Cu-Al alloy was higher than that of pure copper under the same fabrication conditions because of difference in hydrogen solubility. The pore structure was not round shape because the directional pore growth was interrupted with dendrite arms formed during the solidification; the pores grew to detour the obstacle of the dendrite arms.

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Materials Science Forum (Volumes 539-543)

Pages:

1898-1902

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.1898

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Online since:

March 2007

Authors:

Soong Keun Hyun, Tsuyoshi Awadu, Teruyuki Ikeda, Hideo Nakajima

Keywords:

Cu-Al Alloys, Dendrite, Hydrogen, Porosity, Porous Metal, Unidirectional Solidification

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