2000 Fiscal Year Final Research Report Summary
B-C-N Nanotubes prepared by a Plasma Evaporation Method
| Project/Area Number |
10450246
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| Research Category |
Grant-in-Aid for Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Hosei University |
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Principal Investigator |
MORIYOSHI Yusuke Hosei University Faculty of Engineering, Professor, 工学部, 教授 (90267328)
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| Project Period (FY) |
1998 – 2000
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| Keywords | B-C-N nanotube / Carbon surrounded with BN nanotube / Carbon / Boron nitride / Nickel surrounded with BN nanocapsule |
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| Research Abstract |
The nanotubes obtained by a flush evaporation method were divided into three types such as carbon-, boron nitride-, and carbon or carbon nanotubes surrounded with boron nitride nanotubes. These types of nanotubes were obtained at higher temperatures than about 3000 K, no nanotubes were formed at lower temperatures than about 3000K.B-C-N nanotubes with homogeneous composition were not obtained under the experimental conditions. Nanocapsules were formed at higher temperatures than 2500K, but the size of nanocapsules was smaller at lower temperatures, The addition of nickel produced a bundle of single walled carbon nanotubes and boron nitride nanocapsules surrounding nickel particles inside. From the similarities in microstructures between starting materials and final products of nanotubes, the segments just like cups existed in starting materials were assumed as a precursor for nanotubes and nanocapsules. Based on these experimental data, the formation mechanisms of both nanotubes and nanocapsules were briefly discussed
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