超声空化驱动石英玻璃表面液态Ga铺展机制研究  

Mechanism of Liquid Ga Spreading on Quartz Glass Surface Driven by Ultrasonic Cavitation

作　　者：马志鹏 张妍[1] 张茗瑄 于心泷[1] 周佳楠 MA Zhipeng;ZHANG Yan;ZHANG Mingxuan;YU Xinlong;ZHOU Jianan(Department of Materials Science and Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学材料科学与工程系,黑龙江大庆163318

出　　处：《热加工工艺》2024年第17期59-63,共5页Hot Working Technology

基　　金：国家自然科学基金资助项目(51674090)。

摘　　要：在不同超声振幅下进行液态Ga在石英玻璃表面的铺展实验,采用CCD摄影记录仪观察并记录其过程。发现随着超声波振幅的增大,液态Ga的铺展速度和最大铺展面积均增大,并伴有雾化现象。采用Matlab软件求解液态Ga内空化泡壁的运动方程,对空化泡的成长与破裂进行数值模拟分析。结果表明,空化泡初始半径增大,空化阈值下降,液态Ga的表面张力降低,空化效应容易发生。超声波振幅和空化泡的初始半径的增大均会促进在液态Ga中产生空化效应,从而去除液态Ga表面的氧化膜,促进其铺展。The spreading experiments of liquid Ga on the surface of quartz glass under different ultrasonic amplitudes were carried out,the CCD photograph recorder was used to observe and record the process.It is found that with the increase of ultrasonic amplitude,the spreading speed and the spreading area increase,accompanied by the atomization phenomenon.The numerical simulation of the growth and rupture of cavitation bubbles in liquid Ga was carried out by solving the motion equation of the cavitation bubble wall in Matlab software.The results show that with the increase of initial radius of the cavitation bubble,the cavitation threshold decreases,and the surface tension of the liquid Ga decreases,the cavitation effect is easy to occur.The increase of the ultrasonic amplitude and initial radius of the cavitation bubble promotes the cavitation effect in the liquid Ga,thereby removing the oxide film on the surface of the liquid Ga and promoting its spreading.

关 键 词：液态Ga 超声 空化效应 

分 类 号：TG454[金属学及工艺—焊接]