Grain boundary properties of ice doped with small concentrations of potassium chloride (KCl)
Grain boundary properties of ice doped with small concentrations of potassium chloride (KCl)
复制标题
掺杂低浓度氯化钾 (KCl) 的冰的晶界特性
DOI：
10.1088/0953-8984/19/24/246218
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
P. Guzman
中科院分区：
文献类型：
--
作者：
O. Nasello;C. L. Di Prinzio;P. Guzman
晶界（GB）迁移率是在冰双晶中研究的，该双晶是从1至10 µmol l−1（0.02至0.2 ppm）氯化钾（KCl）水溶液中获得的，并在−20 °C以上的温度下退火170天。GB迁移率被确定为退火温度和溶质浓度的函数。获得的GB迁移率值显示出对溶质浓度的系统依赖性。这是第一次在冰中观察到，小浓度的杂质会降低GB的迁移率，就像其他材料一样。结果还表明，可能的变化的GB结构的退火温度范围内研究。
The grain boundary (GB) migration rate was studied in ice bicrystals obtained from 1 to 10 µmol l−1 (0.02 to 0.2 ppm) potassium chloride (KCl) water solutions and annealed at temperatures above −20 °C for 170 days. GB mobility was determined as a function of annealing temperature and solute concentration. The GB mobility values obtained show a systematic dependence on the solute concentration. For the first time, it was observed in ice that small concentrations of impurity decrease the GB mobility, as occurs in other materials. The results also indicate possible changes of the GB structure in the annealing temperature range studied.