Effect of Surface Modification on the Sound Absorption Behavior of Open Celled Aluminum Foams

Yun Jie Li; Yue Lu Ren; Zhen Dong Li; Fu Sheng Han

doi:10.4028/www.scientific.net/MSF.783-786.1509

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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Effect of Surface Modification on the Sound...

Effect of Surface Modification on the Sound Absorption Behavior of Open Celled Aluminum Foams

Abstract:

In the present study, needle like micro-Co₃O₄ rods were synthesized on the cell walls of open celled Al foam_. The microstructure and phase composition of micro-rods and sound absorption properties of resultant samples were characterized. Compared with original Al foams, the modified ones showed enhanced sound absorption capacities, particularly at low frequencies, which were more obvious as the length of Co₃O₄ rods increased. The improvement is related to increased air flow resistance owing to increased roughness of the cell walls.

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Periodical:

Materials Science Forum (Volumes 783-786)

Pages:

1509-1512

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https://doi.org/10.4028/www.scientific.net/MSF.783-786.1509

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Online since:

May 2014

Authors:

Yun Jie Li*, Yue Lu Ren, Zhen Dong Li, Fu Sheng Han

Keywords:

Flow Resistance, Metal Foams, Sound Absorption Materials, Surface Modification

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