Characteristic of absorbing sound in lotus-type porous copper fabricated by unidirectional solidification

被引：1

作者：

Xie, ZK ^{[1
]}

Ikeda, T ^{[1
]}

Okuda, Y ^{[1
]}

Nakajima, H ^{[1
]}

机构：

[1] Osaka Univ, Inst Sci & Ind Res, Ibaraki 5670047, Japan

来源：

JOURNAL OF THE JAPAN INSTITUTE OF METALS | 2004年 / 68卷 / 03期

关键词：

copper; penetration rate; absorption coefficient; porosity; pore size;

D O I：

10.2320/jinstmet.68.185

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Lotus-type porous copper with a high number of unidirectional cylindrical pores was fabricated by unidirectional solidification of melt dissolving hydrogen in a pressurized hydrogen atmosphere. The sound absorption coefficient of porous copper whose specimen face has many open pores was measured by a standing-wave method in the range up to the sound frequency of 4 kHz. The absorption coefficient increases with increasing frequency. The absorption coefficient increases with increasing porosity and specimen thickness, while it decreases with increasing pore size. In addition, it was understood that the absorption coefficient of lotus-type porous materials can be determined by using the attenuation constant.

引用

页码：185 / 190

页数：6

共 50 条

[1] Sound absorption characteristics of lotus-type porous copper fabricated by unidirectional solidification
Xie, ZK
Ikeda, T
Okuda, Y
Nakajima, H
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 386 (1-2): : 390 - 395
[2] Characteristic of absorbing sound in lotus-type porous magnesium
Xie, ZK
Ikeda, T
Okuda, Y
Nakajima, H
JOURNAL OF THE JAPAN INSTITUTE OF METALS, 2003, 67 (12) : 708 - 713
[3] Effect of solidification velocity on pore morphology of lotus-type porous copper fabricated by unidirectional solidification
Hyun, SK
Nakajima, H
MATERIALS LETTERS, 2003, 57 (21) : 3149 - 3154
[4] Fabrication of lotus-type porous silicon by unidirectional solidification in hydrogen
Nakahata, T
Nakajima, H
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 384 (1-2): : 373 - 376
[5] Effect of gas pressure on pore distribution of lotus-type porous magnesium fabricated by unidirectional solidification
Key Laboratory for Advanced Materials Processing Technology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
Zhongguo Youse Jinshu Xuebao, 2007, 2 (200-206):
[6] Evaluation of porosity in lotus-type porous magnesium fabricated by metal/gas eutectic unidirectional solidification
Liu, Y
Li, YX
Wan, J
Zhang, HW
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 402 (1-2): : 47 - 54
[7] Lotus-type Porous Copper Fabricated by Centrifugal Casting
Lee, Y. S.
Hyun, S. K.
POROUS METALS AND METALLIC FOAMS, METFOAM 2011, 2012, : 159 - 162
[8] Fabrication of lotus-type porous copper-aluminum alloy by unidirectional solidification in hydrogen atmosphere
Hyun, Soong-Keun
Awadu, Tsuyoshi
Ikeda, Teruyuki
Nakajima, Hideo
THERMEC 2006, PTS 1-5, 2007, 539-543 : 1898 - +
[9] Compressive and Corrosion Properties of Lotus-Type Porous Mg-Mn Alloys Fabricated by Unidirectional Solidification
Canxu Zhou
Yuan Liu
Huawei Zhang
Xiang Chen
Yanxiang Li
Metallurgical and Materials Transactions A, 2020, 51 : 3238 - 3247
[10] Compressive and Corrosion Properties of Lotus-Type Porous Mg-Mn Alloys Fabricated by Unidirectional Solidification
Zhou, Canxu
Liu, Yuan
Zhang, Huawei
Chen, Xiang
Li, Yanxiang
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2020, 51 (06): : 3238 - 3247

← 1 2 3 4 5 →