MgO纳米颗粒对镁合金阳极氧化膜耐蚀性的影响研究

付广艳, 陈兆苏, 姜天琪, 刘华成, 任 雷

doi:10.16577/j.issn.1001-1560.2022.0226

材料保护 >

2022 , Vol. 55 >Issue 8: 130 - 133

DOI: https://doi.org/10.16577/j.issn.1001-1560.2022.0226

工艺探讨

MgO纳米颗粒对镁合金阳极氧化膜耐蚀性的影响研究

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(沈阳化工大学机械与动力工程学院，辽宁沈阳 110142)

陈兆苏(1996-)，硕士研究生，研究方向为镁合金的腐蚀与防护，电话：18852142898，E - mail：1837270326@qq.com

收稿日期: 2022-02-21

修回日期: 2022-03-29

录用日期: 2022-04-21

网络出版日期: 2023-12-17

基金资助

辽宁省教育厅科学研究项目(LJ2020015)资助

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Effect of MgO Nano - Particles on the Corrosion Resistance of Anodic Oxidation Film on Magnesium Alloy

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(School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China)

Received date: 2022-02-21

Revised date: 2022-03-29

Accepted date: 2022-04-21

Online published: 2023-12-17

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摘要

为了提高镁合金阳极氧化膜的耐腐蚀性能，通过在硅酸盐碱性电解液中添加MgO纳米颗粒，在镁合金表面制备阳极氧化膜。采用光学显微镜、扫描电镜(SEM)、能谱仪(EDS)、涡流测厚仪以及X射线衍射仪(XRD)，分析了MgO纳米颗粒对阳极氧化膜的表面形貌、相组成及厚度的影响。通过点滴实验以及3.5%NaCl浸泡腐蚀试验，分析了MgO纳米颗粒对氧化膜耐腐蚀性的影响。结果表明：在电解液中添加MgO纳米颗粒能够减少膜层微孔数，提升膜层致密度和厚度，增加膜层中的MgO含量，进而提高膜层耐腐蚀性能。

关键词： 镁合金; 阳极氧化; MgO纳米颗粒; 耐腐蚀性

本文引用格式

付广艳, 陈兆苏, 姜天琪, 刘华成, 任雷 . MgO纳米颗粒对镁合金阳极氧化膜耐蚀性的影响研究[J]. 材料保护, 2022 , 55(8) : 130 -133 . DOI: 10.16577/j.issn.1001-1560.2022.0226

Abstract

In order to improve the corrosion resistance of the anodic oxidation film on magnesium alloy，an anodic oxidation film was fabricated on the surface of magnesium alloy by adding MgO nano - particles into the silicate alkaline electrolyte. The effects of MgO nano - particles on the surface morphology, phase composition and thickness of the anodic oxidation film were analyzed by optical microscopy, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), film thickness meter and X - ray diffraction (XRD). Besides, the effect of MgO nano - particles on the corrosion resistance of the anodic oxidation film was analyzed by dropping test and 3.5% NaCl immersion corrosion test. Results showed that adding MgO nano - particles into the electrolyte could reduce the number of micropores in the film and increase its density, thickness and MgO content, thus improving the corrosion resistance of the film.

Key words： magnesium alloy; anodic oxidation; MgO nano - particles; corrosion resistance

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