Effect of fluid motion on the impact erosion by a micro-particle on quartz crystals
Effect of fluid motion on the impact erosion by a micro-particle on quartz crystals
复制标题
流体运动对微粒对石英晶体冲击侵蚀的影响
DOI：
10.1063/1.4960833
复制
发表时间：
2016-08-01
期刊：
影响因子：
1.6
通讯作者：
Chen, Z. Z.
中科院分区：
文献类型：
--
作者：
Cai, D. H.;Qi, H.;Chen, Z. Z.
磨料浆体射流具有柔性高、无热影响区、切割效率高等优点，是一种很有前途的加工多种材料的技术。在本文中，所产生的石英晶体试样上的负载在水流中的微粒的冲击和相关的冲击侵蚀机制的影响，提出和讨论，以有效地和有效地控制加工质量。由于流体运动对靶面附近粒子运动轨迹的影响，加工过程中存在脆性和韧性两种模式的冲蚀。大射流冲击角下的冲蚀过程主要是由脆性贝壳状断裂和破碎区、径向和侧向裂纹所产生的大规模凹坑，而小射流冲击角下的延性模式冲蚀则主要是由微犁削和微切削所产生的小规模凹坑。并给出了工艺参数与熔坑总平均体积的关系。
Abrasive slurry jet (ASJ) is a promising technology to process a variety of materials with advantages of high flexibility, no heat affected zone and high cutting efficiency. In this paper, the impressions generated on a quartz crystal specimen by the impacts of micro-particles laden in a water flow and the associated impact erosion mechanisms are presented and discussed in order to effectively and efficiently control the machining quality. Both brittle and ductile mode erosions coexist in the machining process due to the influence of the fluid motion on the trajectories of particles near the target surface. Large-scale craters produced by brittle conchoidal fractures associated with crashed zone, radial and lateral cracks, dominate the erosion process at large jet impact angles while small-scale craters involving micro-ploughing and micro-cutting are produced by the ductile mode erosion at small jet impact angles. The relation between the process parameters and the overall average volume of craters has al...