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Abstract:
Low-frequency noise (20-300 Hz) is harmful to humans and difficult to eliminate by traditional acoustic materials. Rare-earth high-entropy ceramic driving foamed silicone rubber composites were successfully designed and prepared as potential low-frequency noise absorbers. The sound absorption coefficient (SAC) of the composite doped with 3 wt% (Sm0.2Eu0.2Gd0.2Tm0.2Yb0.2)(2)Zr2O7 powder showed a 1-fold increase in the range of 130.0-152.5 Hz. The composite doped with 10 wt% (Sm0.2Eu0.2Gd0.2Tm0.2Yb0.2)CrO3 powder and 3 wt% (Sm0.2Eu0.2Gd0.2Tm0.2Yb0.2)(2)W3O12 powder showed an 8-fold SAC increase from 145.0 to 160.0 Hz and from 147.5 to 165.0 Hz. Compared with foamed silicone rubber, the three kinds of composites have great potential for application in the field of low-frequency sound absorption.
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MATERIALS LETTERS
ISSN: 0167-577X
Year: 2022
Volume: 313
3 . 0
JCR@2022
2 . 7 0 0
JCR@2023
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:91
JCR Journal Grade:2
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 4
SCOPUS Cited Count: 4
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 2
Affiliated Colleges: