Abstract:
Water-NaCl solid solutions with the salt weight fraction $p$ = 0.0001–0.1000 subjected to high uniaxial compression exhibit elastic instability (similar to the Bridgman explosive effect) in the temperature range 100–260 K. At temperatures from 225 to 260 K, stability threshold $P_c$ (or a critical pressure at which the explosive instability occurs) of these solutions is equal to, or higher than, $P_c$ for pure water ice. However, in the temperature interval 100–225 K, thresholds $P_c$ for the NaCl-water solid solutions with $p\ge$ 0.001 are anomalously low. The largest drop of $P_c$ (by 15 to 30 times relative to $P_c$ for pure water ice) is observed for low $p$, 0.001 $\le p\le$ 0.010. The possible structure of the solid ice solutions in all the temperature ranges mentioned above is analyzed in terms of the percolation theory as applied to elastic networks.
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