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高速度粒子间碰撞是由超声波驱动的
Tanya Prozorov1, Ruslan Prozorov, Kenneth S Suslick
1School of Chemical Science, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, USA.
Journal of the American Chemical Society
|October 28, 2004
概括
超声波辐射会导致金属颗粒的碰撞,导致颗粒间的融化和合聚合物的形成. 粒子大小是诱导这些高速冲击过程中化的关键.
科学领域:
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
- 纳米技术纳米技术
背景情况:
- 超声波辐射是一种强大的工具,可以诱导液体中的腔化和高能量现象.
- 泥中的粒子间碰撞可以产生足够化的局部加热.
研究的目的:
- 为了研究超声波照射引起的粒子间融化的机制.
- 为了确定粒子大小对超声波诱导的聚变的影响.
- 开发一个模型来预测超声驱动的粒子聚变.
主要方法:
- 在基中对 (Zn) 粉末泥进行超声波处理.
- 分析颗粒大小和聚合物形成.
- 开发粒子间碰撞的动力学模型.
主要成果:
- 对 Zn 泥的超声波照射产生了密集的聚合物 (50 毫米) 从化的较小颗粒 (5 毫米) 产生了密集的聚合物.
- 粒子大小是导致碰撞时局部化的最关键因素.
- 混合粉末超声波导致较大的颗粒被较小的颗粒"接".
结论:
- 在超声波过程中,高速冲击足以引起粒子间融化.
- 粒子大小和化标准之间存在一种非单调的关系.
- 实验结果与开发的运动模型的预测一致.
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