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Content Provider | IEEE Xplore Digital Library |
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Author | Kojima, A. Makino, A. Inoue, A. |
Copyright Year | 1965 |
Abstract | Nanocrystalline bulk Fe/sub 88/Nb/sub 2/Nd/sub 5/B/sub 5/ and Fe/sub 86/Nb/sub 2/Nd/sub 7/B/sub 5/ alloys were made by consolidating amorphous powders with an electric-pulse-current sintering method and subsequent annealing. Bulk alloy made by consolidating amorphous powders has a higher density (the maximum density could reach 7.5 g/cm/sup 3/ consolidating at 873 K and 636 MPa) than that made by consolidating crystalline powders, presumably because the amorphous alloy softens around the crystallization temperature. The structure formed after annealing at 1023 K for 180 s shows a nanocrystalline composite consisting of bcc-Fe, Nd/sub 2/Fe/sub 14/B and Fe/sub 3/B or Fe/sub 2/B phases with grain sizes of 20-40 nm. The nanocrystalline bulk Fe/sub 88/Nb/sub 2/Nd/sub 5/B/sub 5/ alloy shows hard magnetic properties, remanence of 1.05 T, coercive force (H/sub cJ/) of 263 kA/m, maximum energy product ((BH)/sub max/) of 75 kJ/m/sup 3/. |
Sponsorship | IEEE Magnetics Society |
Starting Page | 3817 |
Ending Page | 3819 |
Page Count | 3 |
File Size | 568068 |
File Format | |
ISSN | 00189464 |
Volume Number | 33 |
Issue Number | 5 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 1997-09-01 |
Publisher Place | U.S.A. |
Access Restriction | One Nation One Subscription (ONOS) |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Magnetic properties Neodymium Amorphous materials Powders Niobium alloys Iron alloys Annealing Crystallization Temperature Grain size |
Content Type | Text |
Resource Type | Article |
Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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