Investigation of grain boundary structure and grain boundary diffusion of ice using a laser interferometer

本研究的目的是使用激光干涉仪测定晶界厚度等，以及细粒度冰的物理性质。激光干涉仪只是进行了设备的稳定性。利用冰的相变成功地制备了0.01mm量级的细晶冰样品。采用细粒冰试样进行了单轴蠕变试验。温度和强制降解条件为试验参数。在10%应变下的应变速率比正常粒度的冰快几百倍。低温试验条件下没有出现最小应变率。它通常出现在几个存在的应变。这些结果表明，晶界对冰的变形有很大的影响。

Purpose of this study was determination of grain boundary thickness and etc. using a laser interferometer, and physical properties of ice with fine grain size. Laser interferometer was only carried out stability of equipment. Making of ice samples with fine grain size, 0.01mm order, were success by ice phase transition. Uniaxial creep tests were carried out using the fine grain ice samples. The temperature and stress conditions were test parameters. Strain rate at 10% strain is several 100 times faster than normal grain size ice. And minimum stain rate does not appear for cold temperature test conditions. It normally appears around several present of strain. These result suggest that grain boundary strongly affect to deformation of ice.