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爆轰法合成碳包覆镍纳米颗粒的研究

DOI: 10.11858/gywlxb.2011.02.003, PP. 111-117

Keywords: 碳包覆镍纳米颗粒,爆轰合成,X射线衍射,合成机制

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Abstract:

采用自制的负氧平衡复合炸药前驱体,在密闭容器中充氮气保护下爆轰合成了碳包覆镍纳米颗粒。利用X射线衍射、X射线荧光、透射电镜和拉曼光谱等技术,对爆炸产物的组成成分、结构形貌等进行了观测。结果表明,爆轰产物主要由具有面心立方结构的镍晶核和碳元素构成,此外还含有其它微量元素;合成的纳米颗粒呈球形或椭球形状,颗粒尺寸主要分布在10~25nm范围,包覆的碳壳厚度约1~2nm,核壳结构完备。结合观测结果,对爆轰法合成碳包覆纳米颗粒的形成机制进行了简单的讨论。

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