空气流量对45钢离子氧氮共渗的影响
发布时间：2018-12-15 01:39
【摘要】：首次采用空气、氮气和氢气混合气源对45钢进行离子氧氮共渗,并研究空气流量对渗速和组织性能的影响。采用金相显微镜、X射线衍射、电化学工作站对处理后的45钢进行测试和分析。研究结果表明,在离子氧氮共渗过程中添加适量的空气比传统离子氧氮共渗有显著的优势,其中空气流量为0.2 L/min时获得最佳渗层厚度与耐蚀性。温度550℃、保温4h工艺条件下,渗层厚度达到约60μm,是传统离子渗氮的2倍以上;耐腐蚀性也比传统离子渗氮有进一步提高。0.2 L/min的空气流量得到的铁氧化合物主要是Fe_3O_4,空气流量≥0.4 L/min时,Fe_2O_3相增加,氮氧共渗效果变差。
[Abstract]:Air, nitrogen and hydrogen mixtures were used for the first time to study the effect of air flow rate on the microstructure and properties of 45 steel. The 45 steel after treatment was tested and analyzed by metallographic microscope, X-ray diffraction and electrochemical workstation. The results show that the addition of proper amount of air in the process of ion oxygen-nitriding has a significant advantage over conventional ion oxygen-nitrogen co-infiltration, and the optimum thickness and corrosion resistance of the layer are obtained when the air flow rate is 0. 2 L/min. Under the condition of 550 鈩，
本文编号：2379709
[Abstract]:Air, nitrogen and hydrogen mixtures were used for the first time to study the effect of air flow rate on the microstructure and properties of 45 steel. The 45 steel after treatment was tested and analyzed by metallographic microscope, X-ray diffraction and electrochemical workstation. The results show that the addition of proper amount of air in the process of ion oxygen-nitriding has a significant advantage over conventional ion oxygen-nitrogen co-infiltration, and the optimum thickness and corrosion resistance of the layer are obtained when the air flow rate is 0. 2 L/min. Under the condition of 550 鈩，
本文编号：2379709
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