Investigation on particle motions and resultant impact erosion on quartz crystals by the micro-particle laden waterjet and airjet
Investigation on particle motions and resultant impact erosion on quartz crystals by the micro-particle laden waterjet and airjet
复制标题
研究载有微粒的水射流和空气射流对石英晶体的粒子运动和由此产生的冲击侵蚀
DOI：
10.1016/j.powtec.2019.10.032
复制
发表时间：
2020-01-15
影响因子：
5.2
通讯作者：
Tangwarodomnukun, Viboon
中科院分区：
文献类型：
--
作者：
Zhang, Li;Ji, Renquan;Tangwarodomnukun, Viboon
研究磨料水射流和磨料气射流中颗粒的运动及其冲击冲蚀特性，对提高磨料水射流和磨料气射流的微细加工性能具有重要意义。数值研究发现，水射流中的颗粒由于动量平衡数较大，更容易沿水流线运动，且空气射流中的微粒平均冲击角大于水射流，从而影响对石英晶体的冲击冲蚀。通过对单股细颗粒水射流和空气射流冲蚀坑表面形貌的实验分析，发现空气射流对石英晶体的冲蚀主要以脆性冲蚀为主，而细颗粒水射流对石英晶体的冲蚀既有脆性冲蚀，也有韧性冲蚀。特别是在相对较低的水压下，韧性和脆性侵蚀对材料去除过程的贡献同样重要。(C)2019爱思唯尔B.V.保留所有权利。
To investigate particle motions and resultant impact erosion is highly desirable to improve the abrasive waterjet and abrasive airjet micro-machining performance. Numerical study found that particles in waterjet are easier to move following water streamlines than that in airjet due to their larger momentum equilibration numbers, and average impact angle induced by micro-particles in airjet are larger than that driven by waterjet, which in turn affect the resultant impact erosion on quartz crystals. By experimentally analysing the surface morphology of eroded craters generated by the individual micro-particle laden waterjet and airjet, brittle erosion mode is found to significantly dominate the impact erosion of quartz crystal driven by airjet, while both of brittle and ductile erosion modes can be observed by the impacts of the micro-particle laden waterjet. Particularly with relatively low water pressure contributions of ductile and brittle erosions to the material removal process are found to be equally important. (C) 2019 Elsevier B.V. All rights reserved.