[1]方 琴,周棣华,蔺虹宾,等.doi: 10.3969/j.issn.1001-3849.2025.09.006ZrO2颗粒对铝合金微弧氧化膜层组织和性能的影响[J].电镀与精饰,2025,(09):38-45.
　Fang Qin,Zhou Dihua,Lin Hongbin,et al.Effect of ZrO2 particles on microstructure and properties of micro arc oxidation films on aluminum alloys[J].Plating & Finishing,2025,(09):38-45.
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doi: 10.3969/j.issn.1001-3849.2025.09.006ZrO2颗粒对铝合金微弧氧化膜层组织和性能的影响()

《电镀与精饰》[ISSN:1001-3849/CN:12-1096/TG]

卷:
期数:
2025年09
页码:
38-45
栏目:
出版日期:
2025-09-30

文章信息/Info

Title:
Effect of ZrO2 particles on microstructure and properties of micro arc oxidation films on aluminum alloys
作者:
方 琴1; 周棣华1; 蔺虹宾1; 陈 庚1*; 曾 舟1; 邵天琪2
(1. 四川工程职业技术大学 材料工程学院,四川 德阳 618000 ;2. 四川航检科技有限公司,四川 德阳 618000)
Author(s):
Fang Qin1;  Zhou Dihua1;  Lin Hongbin1;  Chen Geng1*;  Zeng Zhou1;  Shao Tianqi2
(1. School of Materials Engineering, Sichuan Polytechnic University, Deyang 618000, China; 2. Sichuan Aviation Inspection Technology Co., Ltd., Deyang 618000, China)
关键词:
微弧氧化; 7050铝合金; ZrO2; 组织
Keywords:
micro arc oxidation;  7050 aluminum alloy;  ZrO2;  microstructure
分类号:
TG174.4
文献标志码:
A
摘要:
为了进一步提升7050铝合金的工作寿命，在恒流模式下对其开展微弧氧化(MAO)试验。通过观测微弧氧化膜层的表面及截面形貌，分析成分和相组成，测量厚度、硬度和表面粗糙度，并对其进行电化学测试分析，来研究添加ZrO2颗粒对7050铝合金微弧氧化膜层组织和性能的影响。结果表明，添加ZrO2颗粒后膜层的相由γ-Al2O3相、α-Al2O3相和ZrO2相构成；膜层表面孔洞和裂纹数量有所减少、尺寸有所变小，平整性、致密度得到改善，膜层中Zr元素含量不断增加；随着ZrO2含量由2 g/L提升至5 g/L，膜层厚度、硬度呈现出先升后降的趋势，表面粗糙度呈现出先减小后增大的趋势；膜层耐蚀性能较常规微弧氧化后有明显提升；总体来看，当ZrO2含量为4 g/L时膜层性能最优，其厚度、硬度、表面粗糙度、自腐蚀电位和自腐蚀电流密度分别为28.49 μm、1 174.6 HV0.1、1.474 μm、?0.345 V和1.813×10?9 A/cm 2。
Abstract:
In order to further improve the working life of 7050 aluminum alloy, micro arc oxidation (MAO) tests were conducted on it in constant current mode. The effect of adding ZrO2 particles on the microstructure and properties of the films on 7050 aluminum alloy was studied by observing the surface and cross-sectional morphology of the films, analyzing the composition and phase composition, measuring the thickness, hardness, and surface roughness, and conducting electrochemical testing and analysis. The results showed that, the phases of the film layer after adding ZrO 2 particles were composed of γ-Al 2O3 phase, α-Al 2O3 phase, and ZrO 2 phase. The number and size of the pores and cracks on the surface of the film layer decreased, the flatness and density improved, and the content of Zr element in the film layer continued to increase. As the ZrO 2 content increased from 2 g/L to 5 g/L, the thickness and hardness showed a trend of first increasing and then decreasing, while the surface roughness showed a trend of first decreasing and then increasing. The corrosion resistance of the film layer was significantly improved compared to the conventional MAO. Overall, when the ZrO2 content is 4 g/L, the performance of the film layer is the most excellent, with a thickness, microhardness, surface roughness, self corrosion potential, and self corrosion current density of 28.49 μm, 1 174.6 HV 0.1, 1.474 μm, ?0.345 V and 1.813×10?9 A/cm 2

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更新日期/Last Update: 2025-09-11