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为了研究氩气气压对铝丝电爆炸法合成的铝纳米粉体特性的影响,建立了一台基于金属丝电爆炸的纳米粉体生产和收集装置,在不同氩气气压条件下成功地制备了铝纳米粉体。利用透射电子显微镜(TEM)观察了合成的铝纳米粉体的形态与结构,并通过TEM图像分析得到了铝纳米粉体的粒径大小及其分布。结果表明:当氩气气压较高时,铝纳米粉体颗粒外形规则,呈球形;其平均粒径比低气压时大;当氩气气压<100kPa时,较高的氩气气压可显著地扩宽铝纳米粉体的粒径分布范围。分析发现,采用这种方法制备的铝纳米粉体的颗粒外形、颗粒粒径及其粒径分布均可以通过改变氩气气压来进行控制。
In order to study the effect of argon pressure on the properties of aluminum nanopowder synthesized by aluminum wire electric explosion method, a nano-powder production and collection device based on wire electric explosion was established and successfully prepared under different argon pressure conditions Aluminum nano powder. The morphology and structure of the synthesized aluminum nanopowders were observed by transmission electron microscopy (TEM). The size and distribution of aluminum nanopowders were obtained by TEM image analysis. The results show that when the pressure of argon gas is high, the particle shape of the aluminum nanopowder is spherical and its average particle size is larger than that of the low pressure gas. When the pressure of argon gas is less than 100kPa, the high pressure of argon gas can significantly expand Wide aluminum nano-particle size distribution. It is found that the particle shape, particle size and particle size distribution of aluminum nanopowders prepared by this method can all be controlled by changing the argon pressure.