Mechanosynthesis of Boron Nitride Nanotubes  

机械法合成BN纳米管

作　　者：籍凤秋 曹传宝 徐红 杨子光 

机构地区：[1]Department of Traffic Engineering, Shijiazhuang Railway Institute of Technology, Shijiazhuang 050043, China [2]Research Center of Material Science, Beijing Institute of Technology, Beijing 100081, China [3]Department of Computer Engineering, Shijiazhuang Railway Institute of Technology, Shijiazhuang 050043, China

出　　处：《Chinese Journal of Chemical Engineering》2006年第3期389-393,共5页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China （No.20171007）.

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 atmosphere was replaced by nitrogen, the yield of nanotubes was remarkably decreased.

关 键 词：boron nitride nanotube MECHANOSYNTHESIS cylindrical morphology bamboo-like structure 

分 类 号：O613.81[理学—无机化学] TB383[理学—化学]