冲击波与动态装载被联系在阶段转变(磅) 的那罐头结果,变化的光、机械的性质,和材料上的化学反应。这里,我们在冲击波和爆炸物理的国家关键实验室从单相的 RuSi 关于多晶的铁,从蓝宝石的光排放的内在的机制,和合成的导致吃惊的磅报导最近的进步。结果显示那条谷物边界(GB ) 能影响 PT 压力阀值和铁,有减少的 GB 缺点的压力阀值减少,和 PT 率的率与增加 GB 显示出一个变化尺寸;波长依赖者光放射率(non-gray-body 排放) 将被产生那没为震惊的蓝宝石以前被揭示,并且观察的光从导致吃惊砍乐队,但是没有过热现象;吃惊压缩能是到合成 Ru-Si nanocrystals 的一条有效的路,当吃惊压力是适当的时;并且 Ru-Si 粉末能完全在 40.4 点转变到好谷物的结构 CsCl 类型 Ru-Si ? GPa。
Shock wave is associated with dynamic loading that can result in phase transition(PT), optical and mechanical property changing, and chemical reaction on materials. Here, we report recent progress about shockinduced PT of polycrystalline iron, the underlying mechanism of the optical emission from sapphire, and the synthesis from single-phase Ru Si in the National Key Laboratory of Shock Wave and Detonation Physics.Results indicated that grain boundary(GB) could affect the PT pressure threshold and rate of iron, the pressure threshold decreases with decreasing GB defects, and the PT rate shows a variation with increasing GB size; wavelength-dependent optical emissivity(non-gray-body emission) would be generated that was not revealed previously for shocked sapphire, and the observed luminescence was from the shock-induced shear bands, but without superheating phenomenon; shock compression could be an effective way to synthesis Ru-Si nanocrystals, when the shock pressure was appropriate; and Ru-Si powder could completely transform to fine-grain structure Cs Cl-type RuSi at 40.4 GPa.