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Microstructure and properties of nano-copper powders prepared by flow-levitation method;

自悬浮定向流法制备纳米Cu粉的微结构和性能表征

Ag nanoparticles were prepared by flow-levitation method.

采用自悬浮定向流法制备纳米Ag粉。

Al nanoparticles were prepared by flow-levitation method.

采用自悬浮定向流法制备金属纳米A l粉。

In order to study the properties and microstructure of the nanocrystalline metals prepared by flow-levitation-molding method,the nano-Cu particles synthesized by flow-levitation method were compacted in high-strength die at room temperature and the nanocrystalline Cu was obtained.

为了研究自悬浮-模压法制备的纳米金属晶体材料的有关性能及微观结构特征,采用自悬浮定向流技术制备出纳米Cu粉,经过常温模压得到金属Cu纳米晶体材料,测试了样品的室温显微硬度,并探讨了不同的压制工艺对金属Cu纳米晶体材料显微硬度的影响;利用X射线衍射谱和正电子湮没技术分别分析了纳米Cu晶体的平均晶粒尺寸和其内部的孔隙状态。

The first is the calculation of Al clusters in 2 to 7 atoms, the second is the simulation of preparation with flow-levitation method in theory, and the third is the preliminary study of the preparation and property of metal nanomaterials.

本文主要进行了三部分的工作，一是对于铝的2～7个原子的小团簇进行了理论计算，二是对于自悬浮定向流制备纳米金属粉进行了理论模拟，三是对于纳米金属材料的制备和性能进行的初步研究。