冲击加载条件下融石英对水的凝固相变的诱导效应

利用轻气炮冲击加载手段和透光性在线测试技术研究了融石英对水的再冲击结冰相变过程的影响.实验结果表明,当再冲击压力为1.28 GPa时,与融石英直接接触的水会发生凝固相变,而与融石英不接触的水在约2 μs观测期间仍然保持液相,证实融石英对水的冲击凝固相变过程产生了明显的诱导作用.同时还给出了相变动力学的解释.关键词：冲击水相变

Crystallization of water induced by fused quartz under shock compression

In this paper, we study the crystallization of water due to fused quartz effect under shock compression by a gas gun and light transmission tests. The experimental results indicate that at 1.28 GPa water rapid crystallizes when the water has come into direct contact with the quartz glass. On the contrary, freezing cannot occur within 2 μs, demonstrating that the observed phenomenon of the liquid-solid phase transition of water can be promoted by the fused quartz. The dynamics of the phase transition is also discussed in this paper.