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Ice Generation and the Heat and Mass Transfer Phenomena of Introducing Water to a Cold Bath of Brine
Published on: March 13, 2017
Grain boundary melting in ice.
E S Thomson1, Hendrik Hansen-Goos, J S Wettlaufer
1Department of Chemistry & Molecular Biology, Atmospheric Science, University of Gothenburg, 41296 Gothenburg, Sweden. erik.thomson@chem.gu.se
The Journal of Chemical Physics
|April 6, 2013
Summary
Grain boundary premelting in water ice is influenced by attractive and repulsive forces. Adding dopant ions increases the premelted film thickness, demonstrating control over ice melting behavior.
Area of Science:
- Physical Chemistry
- Materials Science
- Surface Science
Background:
- Grain boundaries in water ice are crucial for understanding its physical properties.
- Premelting at grain boundaries is a complex phenomenon influenced by various forces.
- Previous studies have not fully elucidated the interplay of forces governing premelting.
Purpose of the Study:
- To investigate the mechanisms of grain boundary premelting in water ice.
- To determine the role of attractive and repulsive forces in premelting.
- To explore the effect of dopant ions on premelted film thickness.
Main Methods:
- Optical scattering techniques were employed to study grain boundary premelting.
- Experiments were conducted on water ice with varying electrolyte concentrations.
- Data analysis involved considering electrostatic interactions and colligative effects.
Main Results:
- Attractive polarization forces suppress grain boundary melting.
- Repulsive forces, including screened Coulomb interactions and colligative effects, enhance melting.
- Increasing electrolyte concentration leads to a thicker premelted film.
Conclusions:
- The premelted film thickness at water ice grain boundaries is controllable via electrolyte concentration.
- Both colligative effects and electrostatic interactions play significant roles in premelting.
- Understanding these forces is key to predicting ice behavior in various environments.
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