Sound Absorption Properties of Stainless Steel Fiber Porous Materials before/after Corrosion

Abstract:

316L stainless steel fiber felt was used as raw material. Sound absorption properties of the porous materials before/after corrosion were measured through the double pipe microphone impedance method. The law of the sound absorption properties was discussed also. In addition, the microstructure of the porous materials was observed by SEM. Some results are concluded as follows: when the hydrochloric acid (HCL) concentration is 1wt%, the sound absorption coefficient of the porous materials before/after corrosion is invariable generally. When the HCL concentration is 10wt%, the one after corrosion is higher than before corrosion, about 0.2 (4000~6000Hz), due to the corrosion pits at the face of the fibers.

• Periodical: Materials Science Forum (Volume 933)
• Pages: 367-372
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.933.367
• Online since: October 2018
• Authors: Qing Bo Ao*, Jian Zhong Wang, Jun Ma, Yuan Ge
• Keywords: Immersion Method, Porosity, Sound Absorption Coefficient, Stainless Steel Fiber Porous Materials

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