Effect of carbon addition on synthesis of BN nanolayers encapsulating Fe fine particles and BN nanotubes |
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| Authors: | Hisato Tokoro Shigeo Fujii |
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| Institution: | a Hitachi Metals, Ltd, Advanced Electronics Research Laboratory, Mikajiri 5200, Kumagaya, Saitama 360-0843, Japan
b Osaka University, Nanoscience and Nanotechnology Center, Institute of Scientific and Industrial Research, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan |
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| Abstract: | Boron nitride (BN) nanolayers encapsulating iron (Fe) fine particles and BN nanotubes were synthesized by annealing mixture powders of hematite, boron and carbon (C) at 1473 K for 2 h in a nitrogen atmosphere. The particles exhibited good soft magnetic properties. The thickness of BN nanolayers increased in the range of 10-100 nm with increasing C content in the mixture powders, which results in providing improvement of oxidation resistance of the particles. In the BN layers, no C was detected. BN nanotubes with diameters of ∼100 nm were also synthesized, and they had cup-stacked and bamboo-like structures. |
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| Keywords: | 75 50 68 55 |
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