Volume 56, Number 3, November 2001
|Page(s)||441 - 446|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||01 December 2003|
Crystal growth and the steady-state grain size during high-energy ball-milling
Department of Physics, Building 307,
Technical University of Denmark
DK-2800 Kgs. Lyngby, Denmark
2 Department of Manufacturing Engineering, Building 204 Technical University of Denmark - DK-2800 Kgs. Lyngby, Denmark
Corresponding author: email@example.com
Accepted: 2 August 2001
The change in crystal size during high-energy ball-milling of hematite and zinc sulphide powders with initial average crystal size of 8 and 4, respectively, has been investigated by X-ray powder diffraction and transmission electron microscopy. It is found that the crystal size increases with ball-milling time. This result shows that the steady-state grain size in ball-milling experiments of bigger particles can be explained by an equilibrium between fracturing and crystal growth. The kinetics of crystal growth during ball-milling of nanoparticles is discussed with reference to a simple empirical model.
PACS: 81.20.Wk – Machining, milling / 61.82.Rx – Nanocrystalline materials / 61.46.+w – Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals
© EDP Sciences, 2001
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