Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1451139 | Acta Materialia | 2005 | 7 Pages |
Abstract
Pure ice bicrystals with crystalline misorientation ã101¯0ã/60° and different configurations were prepared using Milli Q water (impurities less than 10â2 ppm) and annealed at â5, â10, â15 and â20 °C for 170 days. The grain boundary migration was analyzed using a theory developed for the migration of a grain boundary interacting with the sample surface. For each temperature, two samples were measured and grain boundary mobilities were determined. It is observed that the obtained values are widely dispersed, but their maximums can be accurately fitted by an Arrhenius law with an activation energy of 0.53 eV. The experimental values of grain boundary mobility obtained are compared with the theory. It is shown that, for the study temperatures, grain boundaries in “pure” ice do not behave as a liquid-like structure.
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Physical Sciences and Engineering
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Authors
O.B. Nasello, C.L. Di Prinzio, P.G. Guzmán,