SiC含量对SiCP/6092铝基复合材料微弧氧化膜耐蚀性的影响

doi:10.11901/1005.3093.2023.617

材料研究学报

2025, Vol. 39

Issue (2): 153-160 DOI: 10.11901/1005.3093.2023.617

研究论文

本期目录 | 过刊浏览

SiC含量对SiC_P/6092铝基复合材料微弧氧化膜耐蚀性的影响

于文静¹, 刘春忠¹(

), 张洪亮¹, 卢天倪¹, 王东², 李娜¹, 黄震威¹

1 沈阳航空航天大学材料科学与工程学院沈阳 110136
2 中国科学院金属研究所沈阳 110016

Effect of SiC Content on Microstructure and Corrosion Resistance of Micro-arc Oxidation Film on Composites SiC_P/6092 Al-alloy

YU Wenjing¹, LIU Chunzhong¹(

), ZHANG Hongliang¹, LU Tianni¹, WANG Dong², LI Na¹, HUANG Zhenwei¹

1 Materials Science and Engineering, Shenyang Aerospace University, Shenyang 110136, China
2 Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

引用本文:

于文静, 刘春忠, 张洪亮, 卢天倪, 王东, 李娜, 黄震威. SiC含量对SiC_P/6092铝基复合材料微弧氧化膜耐蚀性的影响[J]. 材料研究学报, 2025, 39(2): 153-160.
Wenjing YU, Chunzhong LIU, Hongliang ZHANG, Tianni LU, Dong WANG, Na LI, Zhenwei HUANG. Effect of SiC Content on Microstructure and Corrosion Resistance of Micro-arc Oxidation Film on Composites SiC_P/6092 Al-alloy[J]. Chinese Journal of Materials Research, 2025, 39(2): 153-160.

全文: PDF(5425 KB) HTML

摘要:

在基体中不同SiC含量的SiC_P/6092铝基复合材料表面制备微弧氧化膜，使用XRD、SEM和电化学等手段对其表征，研究了SiC含量对氧化膜耐蚀性能的影响。结果表明：这种氧化膜分为致密层和外部疏松层，主要由α-Al₂O₃、γ-Al₂O₃和Mullite (Al₆Si₂O₁₃)组成。氧化膜的表面有微小的孔洞，孔隙直径和粗糙度随着SiC含量的提高而减小。随着基体中SiC颗粒含量的提高氧化层的生长速度降低，但是不会分解参与反应。随着SiC含量的提高，氧化膜中疏松层的厚度先减小后增大，致密层的厚度先增大后减小。SiC颗粒含量(体积分数)为17%的SiC_P/6092铝基复合材料其表面氧化膜的耐蚀性能最好,腐蚀电压达到-0.466 V、腐蚀电流达到3.82 × 10^-9 A·cm^-2，极化电阻达到1.0 × 10⁵ Ω·cm²。

关键词 ：材料表面与界面, 膜层生长, 微弧氧化, SiC_P/Al复合材料, 耐蚀性

Abstract：

Composites of SiC_P/6092 Al-alloy with 0%, 17% and 30% SiC (volume fraction) were prepared by powder metallurgy, and then micro-arc oxidation films were made on the composites in sodium silicate electrolyte via micro-arc oxidation facility with an adjustable double pulse power supplier, and then the microstructure and composition, as well as the corrosion resistance of the micro-arc oxidation films were characterized by XRD, SEM, and Auto-Lab methods. The results show that the prepared films composed of an inner dense layer and an external loose layer, which are mainly composed of α-Al₂O₃, γ-Al₂O₃ and Mullite. There are many tiny pores on the film surface, and the pore diameter and surface roughness decrease with the increase of SiC content in the matrix. The SiC particles in the matrix have an inhibitory effect during the micro arc oxidation process, thus the growth of the oxide films slows down with the increase of SiC content, but the SiC particles do not decompose to participate in the oxidation reaction. The thickness of the loose layer decreases first and then increases with the increase of SiC content, and the thickness of the dense layer increases first and then decreases with the increase of SiC content. Among others, the oxide film on the composite of SiC_P/6092 Al-alloy with 17% SiC (volume fraction) particles had the best corrosion resistance with free corrosion potential of -0.466 V, corrosion current density of 3.82 × 10^-9 A·cm^-2 and polarization resistance of 1.0 × 10⁵ Ω·cm².

Key words： material surface and interface layer growth micro-arc oxidation SiC_P/Al composite material corrosion protection

收稿日期: 2023-12-28

ZTFLH:

TGN174

通讯作者: 刘春忠，教授，czliu@sau.edu.cn，研究方向为轻合金及电磁功能材料

Corresponding author: LIU Chunzhong, Tel: 18040038858, E-mail: czliu@sau.edu.cn

作者简介: 于文静，女，1998年生，硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2023.617 或 https://www.cjmr.org/CN/Y2025/V39/I2/153

表1 6092铝合金的成分

图1 SiCP/6092铝基复合材料微弧氧化膜的XRD谱和主要相的含量

图2 17% SiCP/6092铝基复合材料微弧氧化膜的XRD谱

图3 不同SiC含量的SiCP/6092铝基复合材料微弧氧化膜的SEM形貌

表2 SiCP/6092铝基复合材料微弧氧化膜的EDS结果

图4 SiCP/6092铝基复合材料微弧氧化膜的粗糙度和孔隙直径

图5 不同SiC含量的SiCP/6092铝基复合材料的表面微弧氧化膜截面的SEM照片和EDS图

图6 SiCP/6092铝基复合材料微弧氧化膜生长的示意图

图7 在微弧氧化过程中SiC颗粒状态的示意图

图8 SiCP/6092铝基复合材料微弧氧化膜的厚度

图9 SiCP/6092铝基复合材料基体和微弧氧化膜的动电位极化曲线

表3 SiCP/6092铝基复合材料基体和微弧氧化膜的动电位极化曲线拟合参数

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