The nanostructure evolution of Ag powder synthesized by high energy ball milling

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• 作者：G.R. Khayati ; ^{rezakhayyati@yahoo.com} ; K. Janghorban
• 关键词：Mechanochemical reduction ; Nanomaterials ; X-ray technique ; Silver nanoparticles
• 刊名：Advanced Powder Technology
• 出版年：2012
• 期刊代码：P121_09218831
• 类别：ms
• 出版时间：May, 2012
• 卷：23
• 期：3
• 页码：393-397
• 文件大小：778 K

摘要

In this paper, nanostructured silver with an average crystallite size of 28 nm and internal strain of 0.44%was synthesized by mechanochemical reduction of Ag₂O using graphite in a high energy planetary ball mill. XRD, SEM and TEM techniques were used to characterize the structural evolution and morphological changes of products. The results showed that the reaction is progressed by a nucleation and growth mechanism process. Although the changes of crystallite size and internal strain in Ag₂O were regular during the milling, there was an irregularity in the aforementioned parameters of Ag particles. This irregularity was probably owing to the progressive generation of silver during the milling.