New evidence for the inverse dependence of mechanical and chemical effects on the frequency of ultrasound
New evidence for the inverse dependence of mechanical and chemical effects on the frequency of ultrasound
复制标题
DOI：
10.1016/j.ultsonch.2010.05.008
复制
发表时间：
2011-01-01
影响因子：
8.4
通讯作者：
Morgan, D.
中科院分区：
文献类型：
--
作者：
Mason, T. J.;Cobley, A. J.;Morgan, D.
声空化现象是声化学研究和讨论的一个重要课题。声空化气泡在靠近表面的水中的破裂可以在由引起腐蚀和磨损的气泡的不对称破裂引起的机械损伤方面带来显著的表面改性。声空化的第二个效应是由气泡内的水的破裂引起的短寿命自由基的形成。对于第一次的依赖性，这些影响已被观察到的塑料材料的表面上作为超声波频率的函数。(C)2010年爱思唯尔BM。All rights reserved.
Acoustic cavitation has been the subject of research and discussion for many years and it is the underlying driving force for sonochemistry. The collapse of acoustic cavitation bubbles in water near to a surface can bring about significant surface modification in terms of the mechanical damage caused by the asymmetric collapse of the bubbles which cause erosion and abrasion. A second effect of acoustic cavitation is the formation of short lived radicals caused by the breakdown of water inside the bubble. For the first time the dependence of these effects has been observed on the surface of a plastic material as a function of ultrasonic frequency. (C) 2010 Elsevier BM. All rights reserved.