Abstract

Using noncontact optical profilometry, atomic force microscopy, scanning electron microscopy, and optical microscopy methods, the effect of the treatment with a scanning beam of nanosecond laser pulses with a wavelength of 355 nm on the surface of a Cu–Cr–Zr bronze alloy is studied. The formation of periodic spherical structures with a diameter of less than 500 nm arranged on conical pedestal supports about 1 μm in height is observed on the bronze alloy surface after laser treatment. It is found that the surface topology of the bronze alloy depends on the laser pulse energy density in the range of 0.2–1.7 J/cm² and on the scanning rate of the laser beam (0.5–1.0 mm/s) at a pulse repetition rate of 100 Hz.

中文翻译：

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纳秒激光辐射脉冲扫描束辐照下铜合金表面微形貌的改性

摘要

使用非接触式光学轮廓仪，原子力显微镜，扫描电子显微镜和光学显微镜方法，用波长为355 nm的纳秒级激光脉冲扫描束在Cu–Cr–Zr青铜合金表面进行处理的效果是研究。激光处理后，在青铜合金表面观察到直径小于500 nm的周期性球形结构的形成，其排列在高度约为1μm的圆锥形基座上。发现青铜合金的表面拓扑结构取决于在0.2–1.7 J / cm ²范围内的激光脉冲能量密度以及在脉冲重复时激光束的扫描速率（0.5–1.0 mm / s）频率为100 Hz