化工新型材料

化工新型材料 ›› 2025, Vol. 53 ›› Issue (10) : 225-230. DOI: 10.19817/j.cnki.issn1006-3536.2025.10.004

科学研究

低压冷喷涂Ni-Zn-Al₂O₃复合涂层的制备及其性能研究

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Preparation and properties study of low-pressure cold-sprayed Ni-Zn-Al₂O₃ composite coatings

Liu Xinyu, Zhu Huaiqing, Ding Minghui, Ming Lijun, Li Moyan, Gao Zeyu

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文章历史 +

Received
2024-08-31
Issue Date	Revised Date
2025-10-13	2024-08-31

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摘要

利用低压冷喷涂技术在AZ91D镁合金上制备了Zn含量不同的Ni-Zn-Al₂O₃复合涂层。通过X射线衍射仪和扫描电子显微镜对涂层的微观结构与形貌进行分析,并对其沉积效率和力学性能进行研究。结果表明:喷涂过程中粉末未发生氧化或相变;随着Zn粉含量的增加,复合涂层截面孔隙率先减小后增大,Zn粉质量分数为14%时截面孔隙率达到最小值1.70%。Zn粉质量分数为14%时,复合涂层更容易沉积,沉积效率为15.87%,此时复合涂层的综合力学性能最佳,表面显微硬度和体积磨损率分别为193.3HV_0.2和2.29×10^-13m³/m。

Abstract

Ni-Zn-Al₂O₃ composite coatings with different Zn contents were prepared on AZ91D magnesium alloy by using low-pressure cold spraying technology in this study.The microstructure and morphology of the coatings were analyzed by X-ray diffractometer and scanning electron microscope,and the deposition efficiency and mechanical properties were also studied.It was found that the powder did not undergo oxidation or phase transformation during the spraying process.With the increase of Zn powder content,the cross-sectional porosity first decreased and then increased,reaching a minimum value of 1.70% when Zn powder content was controlled at 14wt.%.When the Zn powder content was 14wt.%,the coating was easier to deposit,with a deposition efficiency of 15.87% and the best comprehensive mechanical properties,and its surface microhardness and wear rate were 193.3HV_0.2 and 2.29×10^-13m³/m,respectively.

关键词

低压冷喷涂 / AZ91D镁合金 / 复合涂层 / 微观结构 / 耐磨性

Key words

low-pressure cold spraying / AZ91D magnesium alloy / composite coating / microstructure / wear resistance

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低压冷喷涂Ni-Zn-Al₂O₃复合涂层的制备及其性能研究[J]. 化工新型材料, 2025, 53(10): 225-230 DOI:10.19817/j.cnki.issn1006-3536.2025.10.004

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