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

本研究的目的是利用激光干涉仪测定细晶粒冰的晶界厚度等物理性质。激光干涉仪是唯一进行稳定的设备。采用冰相转变法制备了0.01mm级的细晶粒冰样。采用细晶冰样进行了单轴蠕变试验。温度和应力条件为试验参数。10%应变时的应变速率比正常晶粒尺寸的冰快100倍。最低染色率不会出现在低温测试条件下。它通常出现在几个菌株周围。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.