[1]梁汉优*,刘星禹,刘 刚*.doi: 10.3969/j.issn.1001-3849.2025.06.001荷叶提取物对AZ31镁合金耐蚀性能研究[J].电镀与精饰,2025,(06):1-8.
　Liang Hanyou*,Liu Xingyu,Liu Gang*.Study on corrosion resistance of lotus leaf extract to AZ31 magnesium alloy[J].Plating & Finishing,2025,(06):1-8.
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doi: 10.3969/j.issn.1001-3849.2025.06.001荷叶提取物对AZ31镁合金耐蚀性能研究()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2025年06
页码:
1-8
栏目:
出版日期:
2025-06-30

文章信息/Info

Title:
Study on corrosion resistance of lotus leaf extract to AZ31 magnesium alloy
作者:
梁汉优1*; 刘星禹2; 3; 刘 刚2; 3*
(1. 湖南应用技术学院 机电工程学院,湖南 常德 415100 ;2. 南阳理工学院 河南省增材制造航空材料工程研究中心,河南 南阳 473004 ;3. 南阳理工学院 南阳市增材制造技术与装备重点试验室,河南 南阳 473004)
Author(s):
Liang Hanyou1*;  Liu Xingyu2; 3;  Liu Gang2; 3*
(1. School of Mechanical and Electrical Engineering, Hunan Applied Technology University, Changde 415100, China; 2. Engineering Research Center of Additive Manufacturing Aeronautical Materials of Henan Province, Nanyang Institute of Technology, Nanyang 473004, China; 3. Nanyang Key Laboratory of Additive Manufacturing Technology and Equipment, Nanyang Institute of Technology, Nanyang 473004, China)
关键词:
AZ31镁合金; 荷叶提取物; 吸附膜; 耐蚀性能
Keywords:
AZ31 magnesium alloy;  lotus leaf extract;  adsorption film;  corrosion resistance
分类号:
TG178
文献标志码:
A
摘要:
采用荷叶作为提取物对AZ31镁合金试样进行了耐蚀性能的研究，借用光学显微镜、激光共聚焦显微镜、电化学工作站、X射线衍射仪(XRD)、接触角测试仪等设备，对不同工艺参数条件下生成吸附膜的表面形貌、物相、电化学阻抗谱和动电位极化曲线和成膜效果进行了测试与分析。结果表明：荷叶提取物对AZ31镁合金生成吸附膜耐腐蚀性能的工艺参数影响大小为：浸泡时间>温度>浓度。在3.5 wt.% NaCl溶液中浸泡下，最佳工艺参数为提取剂浓度5 g·L-1，浸泡时间1 h，实验温度20 ℃，该条件下AZ31镁合金表面形成致密的絮状结构。在此工艺条件下测得AZ31镁合金的自腐蚀电流密度为4.43×10-6 A·cm-2，与未处理试样的1.97×10?5 A·cm-2相比，明显降低了近一个数量级。
Abstract:
The corrosion resistance of AZ31 magnesium alloy samples was studied by using lotus leaf as extract. The optical microscope, laser confocal microscope, electrochemical workstation, X-ray diffractometer (XRD), contact angle tester and other equipment were used. The surface morphology, phase, electrochemical impedance spectroscopy, potentiodynamic polarization curve and film forming effect of adsorbed films were measured and analyzed under different process parameters. The results showed that the influence of lotus leaf extract on the corrosion resistance of AZ31 magnesium alloy was as follows: soaking time > temperature > concentration. Under the condition of 3.5 wt.% NaCl immersion, the optimal process parameters were extraction concentration of 5 g/L, soaking time of 1 h, and experimental temperature of 20 ℃. Under these conditions, a dense flocculent structure was formed on the surface of AZ31 magnesium alloy. The self-corrosion current density measured under this process condition was 4.43×10?6 A·cm ?2, which was significantly reduced by nearly one order of magnitude compared with 1.97×10?5 A·cm ?2 of untreated samples.

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更新日期/Last Update: 2025-06-18