华东师范大学学报(自然科学版) ›› 2006, Vol. 2006 ›› Issue (4): 23-28.

• 物理学 电子科学技术 • 上一篇    下一篇

冷却速率对低碳钢线材表面氧化皮微观结构的影响

林方婷, 石旺舟, 马学鸣   

  1. 华东师范大学 物理系, 上海 200062
  • 收稿日期:2005-03-15 修回日期:2005-12-15 出版日期:2006-07-25 发布日期:2006-07-25
  • 通讯作者: 石旺舟

Influence of Cooling Rate on Microstructure of Oxide Scales Formed on Low Carbon Steel Wires(Chinese)

LIN Fang-ting, SHI Wang-zhou, MA Xue-ming   

  1. Department of Physics, East China Normal University, Shanghai 200062, China
  • Received:2005-03-15 Revised:2005-12-15 Online:2006-07-25 Published:2006-07-25
  • Contact: SHI Wang-zhou

摘要： 采用X射线衍射与Mossbauer谱分析相结合，研究了不同冷却速率下低碳钢表面形成氧化皮的微观结构；借助磁力显微镜的抬高模式测量氧化皮的磁畴图，获得了氧化皮内Fe3O4的分布形态及冷却速率对其变化的影响.结果表明：快速冷却时氧化皮中Fe2O3的含量减少；FeO与Fe3O4的比例增大；化学计量的FeO含量和Fe3O4的缺陷程度也随冷却速率的变化而变化.氧化皮的相组成和氧化皮内Fe3O4的分布形态是影响氧化皮性能的主要因素.

关键词: 低碳钢, 冷却速率, 氧化皮, 微观结构, 低碳钢, 冷却速率, 氧化皮, 微观结构

Abstract: Oxide scales were prepared by cooling low-carbon steel wires at different rates and the microstructure was investigated by X-ray diffraction (XRD) and Mossbauer spectroscopy. The distribution of Fe3O4 in the oxide scale was obtained using Magnetic Force Microscope (MFM), through which the influence of the cooling rate on the distribution of Fe3O4 was studied. The results showed that when lowcarbon steel wires are rapidly cooled, the content of Fe2O3 in the oxide scale decreases while the content ratio of FeO to Fe3O4 increases. At the same time, the content of stoichiometric FeO and the defect concentration of Fe3O4 can also change with different cooling rates. The phase composition of the oxide scale and the distribution of Fe3O4 are the main factors that affect the properties of the oxide scale.

Key words: cooling rate, oxide scales, microstructure, low-carbon steel wires, cooling rate, oxide scales, microstructure

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