High energy milling of Cu2O powders
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Date
2011
Journal Title
Journal ISSN
Volume Title
Publisher
Oldenbourg Wissenschaftsverlag, München
Abstract
X-ray diffraction line profile analysis based on the recently developed Whole Powder Pattern Modelling was used to investigate the microstructure changes in Cu2O powders milled in a vibrating cup mill. The reduction in the average size of coherently scattering domains - and simultaneous narrowing of the size distribution - occurs in the first minutes. An asymptotic limit of ca. 10 nm is obtained. The reduction in size is obtained at the expenses of introducing a massive quantity of dislocations in the system, reaching a limit of ca. 4×10-16 m-2. A proper nanocrystalline microstructure can be obtained for a milling of ca. 20 min.
Description
Keywords
Diffraction, High Energy Milling, Whole Powder Pattern Modelling
Citation
Z. Kristallogr. Proc. 1 (2011) 75-80