【摘要】 采用直流电弧等离子体加热蒸发金属的方法，制备出Ａｌ超微粉。实验结果表明，在一定压力的Ａｒ＋Ｈ２混和气氛中制备的Ａｌ超微粉产率及粒径分布皆因电弧电流和电弧电压的变化而不同。最后就电弧电流和电压等电参量对Ａｌ超微粉形成的影响进行了分析和讨论。更多还原

【Abstract】 Metal was heated and evaporated by DC arc plasma to prepare ultrafine Al powders.Ex-perimental results show that the production rate and size distribution of ultrafine Al powdersprepared in the mixed gas of Ar+H2 with constant total pressure in the chamber are influ-enced not only by arc current but also by arc voltage,The effects of these factors on the for-mation of ultrafine Al powders are discussed.更多还原