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Volume 23, Issue 11
Displaying 1-2 of 2 articles from this issue
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Contributed Paper
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H. Watanabe, Y. Hirota, M. Takahashi1999 Volume 23 Issue 11 Pages 2083-2087
Published: 1999
Released on J-STAGE: March 20, 2007
JOURNAL OPEN ACCESSThe soft magnetic properties of Fe-Al-Nb-B alloy ribbons crystallized from an amorphous state were investigated. These alloy ribbons showed high magnetic flux density corresponding to that of Fe-based amorphous alloy ribbons after annealing. Fe79Al4Nb5B12 alloy ribbon showed particularly good soft magnetic properties (Bs=1.46 T, λs=2.0 × 10-6, Pc=15 Wkg-1 (f= 100 kHz, Bm=0.1 T)).
The ribbons were composed of bccFe crystallites in the disordered phase, with a grain diameter of less than 20 nm. It was presumed that most of the Al in the alloy was contained in the bccFe crystallite.View full abstractDownload PDF (301K) -
I. Sasada, M. Yoshida1999 Volume 23 Issue 11 Pages 2088-2091
Published: 1999
Released on J-STAGE: March 20, 2007
JOURNAL OPEN ACCESSA new method is presented by which grains in grain-oriented silicon steel can be imaged clearly through an overcoating. A miniaturized magnetic anisotropy probe consisting of an exciting coil and a pickup coil is used as a scanning device. Each grain of the silicon steel is detected as a region within which the easy axis of the magnetic anisotropy is determined to lie in a common direction. Because of its built-in spatial differentiation, the probe is also sensitive to magnetic dis-continuities in a specimen. With these two probe attributes, grains are imaged with the grain boundaries enhanced. The alignment of the easy axis, that is, the [100] direction projected onto the scanning plane with respect to the rolling direction, is displayed on a gray-scale level. Imaging results are shown for highly grain-oriented silicon steel sheets.View full abstractDownload PDF (430K)
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