Parallel groove patterns were fabricated on ZK60A magnesium alloy surface using nanosecond laser technology. In order to study the influence of laser processing parameters on the groove size, firstly, the single factor test was used to preliminarily determine the range of laser parameters, and then the mathematical models between processing parameters and groove width (W), depth (D) were established by response surface methodology. The morphologies, elements, hardness and phases of the magnesium alloy with different scanning distances were characterized by lanthanum hexaboride scanning electron microscope (SEM), environmental SEM, microhardness tester and X-ray diffractometer (XRD), respectively. The electrochemical corrosion performances of polished and laser patterned magnesium alloy samples in hanks' balanced salt solution (HBSS) were analyzed and compared using electrochemical experiments. The results show that W first increases and then decreases with the decrease of laser scanning speed (v) or the increase of repetition frequency (f), while D shows an increasing trend; the regression model obtained by the response surface methodology is in good agreement with the experimental values, and it accurately predicts the groove size. The wavy accumulation on the groove surface is caused by the sputtering of liquid materials when the laser acts on the sample surface. Compared with the polished sample, the hardness of samples with scanning distances of 80, 120 and 160 μm is significantly improved, which are 40.30, 30.69 and 29.18% respectively. E_corr values of polished sample and patterned samples with scanning distances of 80, 120 and 160 μm are −1.4481, −1.6398, −1.5712 and −1.5142 V, respectively; and the corresponding I_corr values are 5.2209 × 10^–6, 1.2378 × 10^–5, 2.7849 × 10^–5 and 6.3782 × 10^–6 A•cm⁻², respectively. The hydrophilicity of laser patterned magnesium alloy is enhanced, which is conducive to cell adhesion, however, the probability of contact between corrosive medium and samples increases at the same time. In addition, the grain refinement increases crystal defects, thereby reducing the corrosion resistance of laser patterned samples.

使用纳秒激光技术在 ZK60A 镁合金表面制造平行凹槽图案。为了研究激光加工参数对凹槽尺寸的影响，首先采用单因素检验初步确定激光参数的范围，然后建立加工参数与凹槽宽度（W）、深度（D）之间的数学模型。 ) 是通过响应面方法建立的。采用六硼化镧扫描电子显微镜（SEM）、环境扫描电镜（SEM）、显微硬度计和X射线衍射仪（XRD）对镁合金在不同扫描距离下的形貌、元素、硬度和物相进行了表征。抛光和激光图案化镁合金样品在汉克斯的电化学腐蚀性能 平衡盐溶液 (HBSS) 使用电化学实验进行分析和比较。结果表明，随着激光扫描速度(v)的降低或重复频率(f)的增加，W先增大后减小，而D则呈增大趋势；响应面法得到的回归模型与实验值吻合较好，准确预测了凹槽尺寸。凹槽表面的波浪状堆积是激光作用在样品表面时液体材料的溅射造成的。与抛光样品相比，扫描距离为80、120和160 μm的样品硬度显着提高，分别提高了40.30、30.69和29.18%。结果表明，随着激光扫描速度(v)的降低或重复频率(f)的增加，W先增大后减小，而D则呈增大趋势；响应面法得到的回归模型与实验值吻合较好，准确预测了凹槽尺寸。凹槽表面的波浪状堆积是激光作用在样品表面时液体材料的溅射造成的。与抛光样品相比，扫描距离为80、120和160 μm的样品硬度显着提高，分别提高了40.30、30.69和29.18%。结果表明，随着激光扫描速度(v)的降低或重复频率(f)的增加，W先增大后减小，而D则呈增大趋势；响应面法得到的回归模型与实验值吻合较好，准确预测了凹槽尺寸。凹槽表面的波浪状堆积是激光作用在样品表面时液体材料的溅射造成的。与抛光样品相比，扫描距离为80、120和160 μm的样品硬度显着提高，分别提高了40.30、30.69和29.18%。响应面法得到的回归模型与实验值吻合较好，准确预测了凹槽尺寸。凹槽表面的波浪状堆积是激光作用在样品表面时液体材料的溅射造成的。与抛光样品相比，扫描距离为80、120和160 μm的样品硬度显着提高，分别提高了40.30、30.69和29.18%。响应面法得到的回归模型与实验值吻合较好，准确预测了凹槽尺寸。凹槽表面的波浪状堆积是激光作用在样品表面时液体材料的溅射造成的。与抛光样品相比，扫描距离为80、120和160 μm的样品硬度显着提高，分别提高了40.30、30.69和29.18%。扫描距离为80、120和160 μm的抛光样品和图案化样品的E _corr值分别为-1.4481、-1.6398、-1.5712和-1.5142 V；对应的I _corr值分别为 5.2209 × 10 ^–6、1.2378 × 10 ^–5、2.7849 × 10 ^–5和 6.3782 × 10 ^–6 A•cm ^-2。激光图案化镁合金的亲水性增强，有利于细胞粘附，但同时也增加了腐蚀介质与样品接触的概率。此外，晶粒细化会增加晶体缺陷，从而降低激光图案样品的耐腐蚀性。