Sound Absorption Characteristics of Aluminum Foams Treated by Plasma Electrolytic Oxidation

被引：20

作者：

Jin, Wei ^{[1
]}

Liu, Jiaan ^{[1
]}

Wang, Zhili ^{[1
]}

Wang, Yonghua ^{[2
,3
]}

Cao, Zheng ^{[1
]}

Liu, Yaohui ^{[1
]}

Zhu, Xianyong ^{[1
]}

机构：

[1] Jilin Univ, Coll Mat Sci & Engn, Minist Educ, Key Lab Automobile Mat, Changchun 130022, Peoples R China

[2] Jilin Univ, Minist Educ, Key Lab Bion Engn, Changchun 130022, Peoples R China

[3] Changchun Univ Sci & Technol, Sch Mech & Elect Engn, Changchun 130022, Peoples R China

来源：

MATERIALS | 2015年 / 8卷 / 11期

基金：

中国国家自然科学基金;

关键词：

foams; aluminum; plasma electrolytic oxidation; sound absorption; MICRO-ARC OXIDATION; CELLULAR METALS; COATINGS;

D O I：

10.3390/ma8115395

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Open-celled aluminum foams with different pore sizes were fabricated. A plasma electrolytic oxidation (PEO) treatment was applied on the aluminum foams to create a layer of ceramic coating. The sound absorption coefficients of the foams were measured by an impedance tube and they were calculated by a transfer function method. The experimental results show that the sound absorption coefficient of the foam increases gradually with the decrease of pore size. Additionally, when the porosity of the foam increases, the sound absorption coefficient also increases. The PEO coating surface is rough and porous, which is beneficial for improvement in sound absorption. After PEO treatment, the maximum sound absorption of the foam is improved to some extent.

引用

页码：7511 / 7518

页数：8

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