文泽军,姜炳春,黄珠,杨胜香,廖秀香,李炳,卢立伟

• 1:湖南科技大学机电工程学院
• 2:广东科技学院机电工程学院
• 3:江西理工大学机电工程学院
• 4:湖南科技大学材料科学与工程学院

摘要(Abstract)：

为研究脉冲频率对微弧氧化膜层组织结构及耐蚀性能的影响，采用不同脉冲频率在硅酸盐电解液中对MB8镁合金进行微弧氧化处理。采用扫描电镜(SEM)、能谱仪(EDS)、X射线衍射仪(XRD)、膜层测厚仪、表面粗糙度仪和电化学工作站等对膜层组织结构与性能进行研究。结果表明：不同脉冲频率制备的MB8镁合金微弧氧化膜层的物相主要由Mg、MgO和Mg_2SiO_4组成；随着脉冲频率的增大，膜层的厚度减小，表面粗糙度增加，孔隙率和最大孔径呈现先减小后增大的趋势；与MB8镁合金基体相比，微弧氧化膜层的自腐蚀电位升高，腐蚀电流密度降低；当脉冲频率为1200 Hz时，微弧氧化膜层的孔隙率最小，表面质量较好，耐腐蚀性能最佳，腐蚀电流密度为1.338×10~(-6) A·cm~(-2),腐蚀电阻为3.356×10~4Ω·cm~2。

关键词(KeyWords)： MB8镁合金;微弧氧化;脉冲频率;微观结构;耐腐蚀性能

Abstract:

Keywords:

基金项目(Foundation): 广东省学科能力提升项目(2024ZDJS070);; 东莞市表面技术与功能材料制备重点实验室(20231600400352)

作者(Author): 文泽军,姜炳春,黄珠,杨胜香,廖秀香,李炳,卢立伟

DOI: 10.13289/j.issn.1009-6264.2025-0221

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