On the Dynamical Characteristics of the Magnetostriction Alloy "Alfer"
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概要
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The dynamical characteristics of the Fe-Al magnetostriction alloys containing from 6.36 to 14.38% Al has been measured by the bridge method in the fields of 5, 10, 15 and 20 Oersteds. It has been found that two curves representing the relations of the magnetostrictive activity and the sound velocity in a field of 10 Oersteds to the concentration have respectively a maximum and a minimum portions in the range of about from 12.2 to 13.4% Al contents ; this range almost coincides with that of the maximum portion (11.5~13.2% Al) in the case of statical magnetostriction The largest value of magnetostrictive activity is 0.058 of 13.19% Al alloy and the sound velocities in the minimum portion range from 4, 500 to 4, 540 m/sec. A small addition of nickel to these alloys fairly increases their magnetostrictive activities. The electroacoustic energy conversion efficiencies of these alloys, calculated with Dr. K. Kobayashi's formula are of the same order as that of nickel, being nearly 100%. So these alloys may be used in place of nickel as a magnetostriction vibrator.
- 東北大学の論文
著者
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Masumoto Hakaru
The Research Institute For Iron Steel And Other Metals
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OTOMO Goro
The Research Institute for Iron, Steel and Other Metals
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Otomo Goro
The Research Institute For Iron Steel And Other Metals
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Matsumoto Haharu
The Research Institute for Iron, Steel and Other Metals
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