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利用TEM(透射电子显微镜)和EELS(电子能量损耗光谱学)观察、分析了通过等离子蒸发办法制备的B-C-N纳米管。所获得的纳米管可分为碳、硼氮化物及含碳硼氮化物合成纳米管三种类型。但是未能获取均匀相的BC_XN纳米管。这表明,在实验室状态下碳和硼的混合物相比BC_XN混合物的均一相更稳定。并且研究了温度对纳米管形成的影响,结果表明,在高于3000K的高温下可形成纳米管,而在低于3000K的低温下可形成纳米胶囊。根据所获得的微观结构数据,阐述了纳米管和纳米胶囊的成形机制。
B-C-N nanotubes prepared by plasma evaporation were analyzed by TEM (Transmission Electron Microscopy) and EELS (Electron Energy Loss Spectroscopy). The obtained nanotubes can be divided into carbon, boron nitride and carbonitrided boron nitride synthesis of three types of nanotubes. However, BC_XN nanotubes can not be obtained in uniform phase. This shows that the mixture of carbon and boron is more stable under laboratory conditions than the homogeneous phase of the BC_XN mixture. The effect of temperature on the formation of nanotubes was also studied. The results show that nanotubes can be formed at high temperature above 3000K and nanocapsules can be formed at low temperature below 3000K. Based on the obtained microstructure data, the forming mechanism of nanotubes and nanocapsules was described.