铝黄铜的冲蚀和冲蚀-腐蚀:射流速度、石英砂浓度和撞击角对表面粗糙度的影响（英文）

发布时间：2018-04-08 16:27

本文选题：铝黄铜　切入点：侵蚀-腐蚀　出处：《Transactions of Nonferrous Metals Society of China》2017年11期

【摘要】：研究射流速度、石英砂浓度和撞击角度对冲蚀和冲蚀-腐蚀后铝黄铜表面粗糙度的影响。冲蚀和冲蚀-腐蚀实验在射流冲击机中进行。采用二维和三维轮廓曲线仪以及扫描电子显微镜表征被侵蚀样品表面。结果表明,在9、6和3 m/s射流速度下,分别增加石英砂浓度至1、5和10 g/L,冲蚀-腐蚀试样表面粗糙度增加;但是,进一步增加石英砂浓度,由于试样表面的加工硬化、反弹或覆盖效应以及高频冲击作用,试样表面粗糙度降低。随着射流速度的增加,试样表面粗糙度增加。研究结果还表明,当射流速度为3和6 m/s时,试样表面粗糙度随撞击角度的变化并不明显;而在较高的射流速度9 m/s时,倾斜撞击造成腐蚀表面形成波痕,因此,具有比正面撞击试样更高的表面粗糙度。
[Abstract]:The effects of jet velocity, quartz sand concentration and impact angle on the surface roughness of aluminum brass after erosion and erosion were studied.Erosion and erosion-corrosion experiments were carried out in a jet impactor.Two-dimensional and three-dimensional profilometer and scanning electron microscope (SEM) were used to characterize the surface of the corroded samples.The results show that the surface roughness of erosion-corrosion specimen increases with the increase of quartz sand concentration to 1 ~ 5 g / L and 10 g / L at 9 ~ 6 and 3 m / s jet velocities respectively, but further increases in quartz sand concentration due to work hardening on the sample surface.The surface roughness of the sample decreases due to the effect of rebound or cover and high frequency impact.With the increase of jet velocity, the surface roughness of the sample increases.The results also show that when the jet velocities are 3 and 6 m / s, the surface roughness of the sample does not change significantly with the impact angle, while at the higher jet velocity of 9 m / s, the slanting impingement results in the formation of ripples on the corrosion surface.Has a higher surface roughness than the frontal impact specimen.
【作者单位】： School
【分类号】：TG171

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