Fabrication and Sound Absorption Properties of Porous Fe0.2(Co20Ni80)0.8 Alloy Microfibers

Xiang Qian Shen; Hong Bo Liu; Qing Rong Liang; Xin Chun Yang

doi:10.4028/www.scientific.net/AMR.538-541.2220

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 538-541Fabrication and Sound Absorption Properties of...

Fabrication and Sound Absorption Properties of Porous Fe_0.2(Co₂₀Ni₈₀)_0.8 Alloy Microfibers

Abstract:

The porous nanocrystalline Fe0.2(Co20Ni80)0.8 alloy microfibers with diameters of 2-4 μm have been prepared by the citrate-gel and phase transformation process. The sound absorption coefficient for microfibers samples is measured by the standing wave tube method and it is is over 0.8 for the 15 mm thick sample at the frequency range of 2300-6000 Hz, which is extended to 600-6300 Hz for the 40 mm thick sample. The band width with the sound absorption coefficient above 0.6 is wider than 4300 Hz for the 15 mm thick sample and 5800 Hz for the 40 mm thick sample. For the 40 mm thick sample, the maximum absorption coefficient, noise absorption coefficient, noise reduction coefficient and half-width of the absorption peak are 0.99, 0.59, 0.64 and 5828 Hz, respectively. These microfibers are promising advanced acoustic absorbers.

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Advanced Materials Research (Volumes 538-541)

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2220-2223

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https://doi.org/10.4028/www.scientific.net/AMR.538-541.2220

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June 2012

Authors:

Xiang Qian Shen, Hong Bo Liu, Qing Rong Liang, Xin Chun Yang

Keywords:

Alloy, Citrate-Gel, Microfiber, Porous, Sound Absorption

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