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高压退火
相关语句
  high pressure annealing
    EFFECT OF HIGH PRESSURE ANNEALING ON MICROSTRUCTURAL TRANSFORMATION OF NANOTUBES
    高压退火对碳纳米管微结构转变的影响
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  high pressure annealing
High pressure annealing was carried out in Bridgman anvils apparatus.
      


Abstract The microstructural transformations of carbon nanotubes under high pressure annealing have been studied by high resolution transmission electron microscopy. It is found that under 5.5GPa the microstructure of nanotubes has obviously changed at an annealing temperature of 770℃, while onion like and ribbon like structures formed at 950℃. The transformation from carbon nanotubes into quasi spherical onion occurs in several steps, first the shells of nanotubes collapse, then spheres form and finally...

Abstract The microstructural transformations of carbon nanotubes under high pressure annealing have been studied by high resolution transmission electron microscopy. It is found that under 5.5GPa the microstructure of nanotubes has obviously changed at an annealing temperature of 770℃, while onion like and ribbon like structures formed at 950℃. The transformation from carbon nanotubes into quasi spherical onion occurs in several steps, first the shells of nanotubes collapse, then spheres form and finally onion like structures appear. The effects of high pressure and annealing temperature on microstructural changes are discussed.

利用高分辨电子显微镜研究了在高压退火条件下碳纳米管的微结构变化规律,发现在55GPa下,770℃退火后即发生了明显的结构改变;在950℃退火25min后发现形成了类碳纳米洋葱和纳米碳条带结构.碳纳米管转变成类碳纳米洋葱可以分成几个步骤,首先碳纳米管破裂,然后形成碳纳米球,最后形成类碳纳米洋葱结构.讨论了高压和退火温度对碳纳米管结构变化的影响

 
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