Shock Compaction of an Acicular Iron-Alloy Powder to Produce a Nanocrystalline Magnet
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概要
- 論文の詳細を見る
A shock-compaction technique of an acicular magnetic iron-alloy powder was developed to produce a nanocrystalline magnet preserving its magnetic properties and acicular features. Although a precompacted disk of the powder had undesirable initial conditions which were a large porosity of 50% and a wide distribution of pore size, use of a double-plate flyer consisting of copper and aluminum made it possible to produce a good compact having a density 98% of the theoretical value, 6.2 GPa Vicker's microhardness, and maximum energy product of 15.1 kJ/m^3. One-dimensional wave-propagation analysis implies effective compression at the initial stage suppressing the total thermal energy and the localization of heat in the vicinity of large pores. The method is discussed for improving the magnetic properties.
- 社団法人応用物理学会の論文
- 1994-04-15
著者
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Kondo K
Fujitsu Laboratories Ltd.
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KONDO Ken-ichi
Research and Development Center, Stanley Electric Co,. Ltd.,
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Oda Hideaki
Research Laboratory Of Engineering Materials Tokyo Institute Of Technology
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Kondo Ken-ichi
Research And Development Center Stanley Electric Co . Ltd.
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Kondo Ken-ichi
Research Laboratory Of Engineering Materials Tokyo Institute Of Technology Nagatsuta
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Oda H
Research Laboratory Of Engineering Materials Tokyo Institute Of Technology Nagatsuta
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HIRAI Hisako
Research Laboratory of Engineering Materials Tokyo Institute of Technology Nagatsuta
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