Fabrication method for closed-cell aluminium foam with improved sound absorption ability

被引：14
|
作者：
Byakova, Alexandra [1 ]
Bezim'yanny, Yuri [1 ]
Gnyloskurenko, Svyatoslav [2 ]
Nakamura, Takashi [3 ]
机构：
[1] Natl Acad Sci Ukraine, Inst Problems Mat Sci, UA-03142 Kiev, Ukraine
[2] Natl Acad Sci Ukraine, Phys Technol Inst Met & Alloys, UA-03142 Kiev, Ukraine
[3] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan
来源：
8TH INTERNATIONAL CONFERENCE ON POROUS METALS AND METALLIC FOAMS | 2014年 / 4卷
关键词：
closed-cell Al-foam; melt route; thermal treatment; sound absorption; AL BASED FOAMS; AGENT;
D O I：
10.1016/j.mspro.2014.07.573
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The paper presents new method for production of closed-cell Al foams of improved sound absorbing ability with no machining operations. Opening the closed-cell structure of solid foamed Al is provided by micrometer sized cracks lengthways the eutectic domains created by finish heat treatment that includes heating below the solidus temperature followed by water quenching. The presence of through cracks provides for interconnection of the cells, making them like Helmholtz micro-perforated resonators and ensuring the increase by 15% of sound absorption coefficient. Processing parameters of foaming and followed heat treatment required for transformation of closed cells into micro-perforated resonators are discussed and specified. (C) 2014 Published by Elsevier Ltd.
引用
收藏
页码：9 / 14
页数：6
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