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

In this paper, nanostructured silver with an average crystallite size of 28nm 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 morp...

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Bibliographic Details
Published in:Advanced powder technology : the international journal of the Society of Powder Technology, Japan Japan, 2012-05, Vol.23 (3), p.393-397
Main Authors: Khayati, G.R., Janghorban, K.
Format: Article
Language:English
Subjects:
Mechanochemical reduction
Nanomaterials
Silver nanoparticles
X-ray technique
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Summary:In this paper, nanostructured silver with an average crystallite size of 28nm 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.
ISSN:0921-8831
1568-5527
DOI:10.1016/j.apt.2011.05.005