High-Speed Biphase Microdrops

有前途的新材料，如 陶瓷碳化物和氮化物是阻碍了缺乏良好的方法 来加工它们 研究人员计划开发一种新的加工方法， 方法的基础上的影响非常高速微滴。 水滴冲击具有惊人的大侵蚀作用。 这一现象可以用以下事实来解释： 目标比停滞点大20倍以上 液体的压力。 分析研究预测，通过增加 第二阶段的气体或固体，数量级更高 压力可以达到。 根据以往的研究经验 对超小（纳米级）颗粒的断裂和对 微滴高速冲击的切割效应， 研究人员计划将高速双相微滴应用于 材料去除和粉碎，以及用于声化学销毁 双相微滴撞击产生的有毒难熔化学品。 第一个目标是证明这一点的可行性 用于加工难加工材料的新工具。 另一 目的是研究潜在的应用， 销毁有毒和难以销毁的化学品。

The progress of the technology of promising new materials like ceramics carbides and nitrides is impeded by a lack of good methods to machine them. The researchers plan to develop a novel machining method based on the impact of very highspeed microdroplets. Water drop impact has a surprisingly large erosive effect. This phenomena can be explained by the fact that the stresses in the target are over twenty times larger than the stagnation pressure of the liquid. Analytical studies predict that, by adding a second phase of gas or solid, orders of magnitude still higher stresses can be reached. Based upon previous research experiences on the fracture of ultrasmall (nanoscale) particles and on the cutting effects of microdrops impacts at high velocity, the researchers plan to apply high-speed biphase microdrops for material removal and comminution, and for sonochemical destruction of toxic refractory chemicals produced by biphase microdrop impact. The first objective is to demonstrate the feasibility of this new tool for machining difficult to work materials. A further objective is to investigate potential application to the destruction of toxic and difficult to destroy chemicals.