机械法合成BN纳米管

CIESC Journal

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机械法合成BN纳米管

籍凤秋^a,b; 曹传宝^b; 徐红^c; 杨子光^c

^aDepartment of Traffic Engineering, Shijiazhuang Railway Institute of Technology, Shijiazhuang 050043, China
^b Research Center of Material Science, Beijing Institute of Technology, Beijing 100081, China
^c Department of Computer Engineering, Shijiazhuang Railway Institute of Technology, Shijiazhuang 050043, China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-06-28 发布日期:2006-06-28
通讯作者: 籍凤秋

Mechanosynthesis of Boron Nitride Nanotubes

JIFengqiu^a,b; CAOChuanbao^b; XUHong^c; YANGZiguang^c

^a Department of Traffic Engineering, Shijiazhuang Railway Institute of Technology, Shijiazhuang 050043, China
^b Research Center of Material Science, Beijing Institute of Technology, Beijing 100081, China
^c Department of Computer Engineering, Shijiazhuang Railway Institute of Technology, Shijiazhuang 050043, China

Received:1900-01-01 Revised:1900-01-01 Online:2006-06-28 Published:2006-06-28
Contact: JI Fengqiu

摘要/Abstract

摘要： Boron nitride nanotubes (BN-NTs) with pure hexagonal BN phase have been synthesized by heating ball-milled boron powders in flowing ammonia gas at a temperature of 1200℃. The as-synthesized products were characterized by X-ray powder diffraction, transmission electron microscopy, high-resolution transmission electron microscopy, and electron energy loss spectroscopy (EELS). The diameters of nanotubes are in the rage of 40—120nm and the lengths are more than 10μm. EELS result identifies that the ratio of boron and nitrogen is almost 1:1. The growth temperature is a crucial growth parameter in controlling the structure and crystalline of BN-NTs. The nanotubes grown at 1100℃ possesses of a bamboo-like structure, while as the temperature increased to 1200℃, most of the nanotubes exhibited a cylindrical structure. In addition, changing the heating time can control the size of the nanotubes. The gas atmosphere has influence on the yield of BN-NTs during heating process. When heating at-mosphere was replaced by nitrogen, the yield of nanotubes was remarkably decreased.

关键词: boron nitride nanotube;mechanosynthesis;cylindrical morphology;bamboo-like structure

Abstract: Boron nitride nanotubes (BN-NTs) with pure hexagonal BN phase have been synthesized by heating ball-milled boron powders in flowing ammonia gas at a temperature of 1200℃. The as-synthesized products were characterized by X-ray powder diffraction, transmission electron microscopy, high-resolution transmission electron microscopy, and electron energy loss spectroscopy (EELS). The diameters of nanotubes are in the rage of 40—120nm and the lengths are more than 10μm. EELS result identifies that the ratio of boron and nitrogen is almost 1:1. The growth temperature is a crucial growth parameter in controlling the structure and crystalline of BN-NTs. The nanotubes grown at 1100℃ possesses of a bamboo-like structure, while as the temperature increased to 1200℃, most of the nanotubes exhibited a cylindrical structure. In addition, changing the heating time can control the size of the nanotubes. The gas atmosphere has influence on the yield of BN-NTs during heating process. When heating at-mosphere was replaced by nitrogen, the yield of nanotubes was remarkably decreased.

Key words: boron nitride nanotube, mechanosynthesis, cylindrical morphology, bamboo-like structure

籍凤秋, 曹传宝, 徐红, 杨子光. 机械法合成BN纳米管[J]. CIESC Journal.

JIFengqiu, CAOChuanbao, XUHong, YANGZiguang. Mechanosynthesis of Boron Nitride Nanotubes[J]. .

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机械法合成BN纳米管

Mechanosynthesis of Boron Nitride Nanotubes

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