arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2411.04670cond-mat.softphysics.app-ph
收藏

冰晶化造成的损伤

Damage due to Ice Crystallization

Menno Demmenie, Paul Kolpakov, Boaz van Casteren, Dirk Bakker, Daniel Bonn, Noushine Shahidzadeh

AI总结:

本研究通过结冰实验发现,部分水饱和介质中封闭液态包裹体的形成与冻结会产生高压导致材料破裂,并基于热力学定量解释了结晶压力,提出改变润湿性可避免损伤。

摘要:

水的结冰是冬季材料发生机械损伤的主要原因之一;令人惊讶的是,即使在水仅部分饱和材料、冰有空间生长的情况下,这种情况也会发生。在此,我们在不同尺寸和润湿性属性的圆柱形玻璃小瓶中进行结冰实验,使用一种仅对液相染色的染料;这使得我们能够精确观察结冰前沿。可视化结果表明,当气/水弯月面结冰导致冰内形成封闭的液态包裹体时,部分水饱和介质中就会发生损伤。当该水包裹体随后结冰时,体积膨胀会产生极高的压力,导致周围冰和玻璃小瓶均发生破裂。基于热力学可以定量理解该压力,热力学正确预测结晶压力与液态包裹体的体积无关。最后,我们的结果还表明,通过改变限制壁的润湿属性,可以避免形成导致机械损伤的液态包裹体。

英文摘要:

The freezing of water is one of the major causes of mechanical damage in materials during wintertime; surprisingly this happens even in situations where water only partially saturates the material so that the ice has room to grow. Here we perform freezing experiments in cylindrical glass vials of various sizes and wettability properties, using a dye that exclusively colors the liquid phase; this allows to precisely observe the freezing front. The visualization reveals that damage occurs in partially water-saturated media when a closed liquid inclusion forms within the ice due to the freezing of air/water meniscus. When this water inclusion subsequently freezes, the volume expansion leads to very high pressures leading to the fracture of both the surrounding ice and the glass vial. The pressure can be understood quantitatively based on thermodynamics which correctly predicts that the crystallization pressure is independent of the volume of the liquid pocket. Finally, our results also reveal that by changing the wetting properties of the confining walls, the formation of the liquid pockets that cause the mechanical damage can be avoided.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑