合金化参数对烘烤硬化钢表面热镀锌合金化镀层结构和抗粉化性能的影响

发布时间：2018-03-21 10:59

  本文选题：热镀锌合金化　切入点：烘烤硬化钢　出处：《机械工程材料》2017年12期 　论文类型：期刊论文

【摘要】：在不同合金化温度和时间下在H_220BD烘烤硬化钢表面制备了热镀锌合金化镀层,研究了镀层的形貌、化学成分与抗粉化性能.结果表明:随着合金化温度的升高、合金化时间的延长,镀层与钢基体之间的锌铁互扩散变充分,铁锌合金相逐渐生成且向镀层表面生长,其形态由条柱状逐渐转变为细小颗粒状,镀层的平均铁含量与粉化量增加;当合金化温度为480℃、合金化时间为25 s时,镀层性能较佳,铁锌合金相呈细小颗粒状,镀层粉化量较小.
[Abstract]:The hot-dip galvanizing alloying coating was prepared on H220BD baking hardening steel surface at different alloying temperature and time. The morphology, chemical composition and powdering resistance of the coating were studied. The results showed that: with the increase of alloying temperature, With the prolongation of alloying time, the Zn / Fe interdiffusion between the coating and the steel substrate becomes sufficient, the Fe-Zn alloy phase is gradually formed and grows to the surface of the coating, and the shape of the alloy changes from the columnar to the fine granular. When the alloying temperature is 480 鈩，

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