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Anomalous evaporation behavior of ZnO powder milled mechanically under high-energy conditions
journal contribution
posted on 2008-02-29, 00:00 authored by Alexey Glushenkov, H Zhang, Ying (Ian) ChenYing (Ian) ChenZnO powder showed anomalous evaporation behavior after its mechanical milling treatment under high-energy conditions. The amount of generated vapor is about 10 times higher in the first 15 min of annealing at 1300 °C than that of unmilled ZnO powders. The strong ball impacts are responsible for the greatly enhanced evaporation ability. Low-energy ball milling involving shearing actions and rare weak impacts leads only to a small evaporation rate enhancement. The possible explanation of the high evaporation rate of the heavily milled material is the existence of large fraction of weakly bonded atoms in grain boundaries, surface defects and strained areas.
History
Journal
Materials lettersVolume
62Issue
4-5Pagination
715 - 718Publisher
Elsevier B. V.Location
Amsterdam, The NetherlandsPublisher DOI
ISSN
0167-577XeISSN
1873-4979Language
engPublication classification
C1.1 Refereed article in a scholarly journalCopyright notice
2007, Elsevier B.V.Usage metrics
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