| Tb_1-_xDy_x(Fe_1-_yMn_y)_(1.95)合金的磁致伸缩和声学性质及在水声换能器中的应用 |
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| 引用本文： | 杜挺,张洪平,朱厚卿.Tb_1-_xDy_x(Fe_1-_yMn_y)_(1.95)合金的磁致伸缩和声学性质及在水声换能器中的应用[J].中国稀土学报,1999(2). |
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| 作者姓名： | 杜挺 张洪平 朱厚卿 |
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| 作者单位： | 钢铁研究总院，中国科学院声学所 |
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| 基金项目： | 国家自然科学基金,冶金部稀土办资助项目 |
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| 摘 要： | 研究了Ｔｂ１－ｘＤｙｘ（Ｆｅ１－ｙＭｎｙ）１．９５合金的磁致伸缩、声学等性质及其在水声换能器中的应用。当外加的磁场强度≥８００ｋＡ·ｍ－１时，磁致伸缩系数值在（１３００～１８００）×１０－６范围，有效机电偶合系数值０８４～０９３，声速为２１６８～２８５６ｍ·ｓ－１，杨氏模量为（５０６～７２６）×１０１０Ｎ·ｍ－２；用合金棒材研制水声换能器，该换能器总长３００ｍｍ，总重２ｋｇ，其共振频率为２４ｋＨｚ，发射电流响应１７３ｄＢ，频宽１ｋＨｚ，电声效率４５％
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| 关 键 词： | 稀土，Tb_1－_xDy_x（Fe_1－_yMn_y）_(1．95)合金，磁致伸缩合金，声学性能，水声换能器 |
Magnetostriction and Acoustics Properties ofTb1-xDyx(Fe1-yMny)1.95 Alloys and Application to
Sonar Transducer |
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| Du Ting,Zhang Hongping.Magnetostriction and Acoustics Properties ofTb1-xDyx(Fe1-yMny)1.95 Alloys and Application to
Sonar Transducer[J].Journal of the Chinese Rare Earth Society,1999(2). |
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| Authors: | Du Ting Zhang Hongping |
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| Abstract: | The magnetostriction and acoustic properties of Tb1-xDyx(Fe1-yMny)1.95 alloys
and application to sonar transducer were studied. The experimental results are as follows:
When the applied magnetic field strength 800 kAm-1, the magnetostrictive coefficients are in the
range of (13001800)10-6, the electromechanical coupling factors 084093, the sound velocities
21682856 ms-1, and the Youngs Modulus (506726)1010 Nm-2. The alloy rod was applied to
construct a sonar transducer, which is 300 mm in length and 2 kg in weight. The characteristics
of the sonar transducer are specified resonant frequency 24 kHz, frequency band 1 kHz, current
response 173 dB and electroacoustic efficiency 45%. |
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| Keywords: | Rare earths Tb1-xDyx(Fe1-yMny)1 95 alloys Magnetostriction Acoustics properties Sonar transducer |
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