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镀铝处理对20钢与AZ91D镁合金界面反应研究

Effect of Hot-Dip Aluminizing on the Interfacial Reaction between 20 Steel and AZ91D Magnesium Alloy

Environment and Resource / 2025,7(1): 84-97 / 2025-08-27 13 25

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• Authors: 周锐¹ 郭珍爱¹ 蒋奇宏¹ 戴甲洪¹ 郑显惠² 应贤川²
• Information:

  1.长江师范学院材料科学与工程学院，重庆；
  2.重庆南涪铝业有限公司，重庆

• Keywords:
  Hot-dip aluminizing; 20 steel; AZ91D magnesium alloy; Interface
  镀铝; 20钢; AZ91D镁合金; 界面反应
• Abstract: To address the issue of crucible corrosion by magnesium alloys during melting, this study investigated the effect of hot-dip aluminizing on the interfacial reaction between 20 steel and AZ91D magnesium alloy using scanning electron microscopy （SEM） and energy dispersive spectroscopy （EDS）. Experimental results revealed that while no distinct reaction layer formed at the interface between the AZ91D magnesium alloy melt and 20 steel, the bonding was intimate. Furthermore, the Al₅Fe₂ compound layer formed on the hot-dip aluminized 20 steel surface exhibited no significant interfacial reaction with the AZ91D melt. Consequently, the Al₅Fe₂ layer effectively protects the 20 steel substrate. 为解决镁合金在熔炼过程中对坩埚的侵蚀问题，本文借助扫描电镜和能谱仪分析研究了热镀铝处理对20钢与AZ91D镁合金界面反应的影响。实验结果显示：AZ91镁合金熔体与20钢的界面虽然没有反应层生成，但是结合紧密；经过热浸铝处理的20钢表面的Al5Fe2化合物层在与AZ91镁合金熔体的界面反应过程中没有明显的界面反应发生，因此20钢表面热浸铝形成的Al5Fe2化合物层对20钢具有较好的保护作用。
• DOI: https://doi.org/10.35534/er.0701007
• Cite: 周锐，郭珍爱，蒋奇宏，等．镀铝处理对20钢与AZ91D镁合金界面反应研究［J］．环境与资源，2025，7（1）：84-97.