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| Oxide Scale Growth on High Carbon Steel at High Temperatures |
| HU Xian-jun1,2,ZHANG Bi-ming1,CHEN Shao-hui2,FANG Feng1,JIANG Jian-qing1 |
1. School of Materials Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China
2. Jiangsu Sha-Steel Group, Zhangjiagang 215625, Jiangsu, China |
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Abstract The structure and formation process of oxidation on high carbon steel were investigated with the aid of X-ray diffraction (XRD), scanning electron microscope (SEM) and Laser Raman spectroscopy (LRS). The oxide scale formed comprised a three-layer structure, similar to that formed on pure iron and low-carbon steel. For the high carbon steel, however, the scale was essentially a two-layered because of the low proportion of hematite (Fe2O3) formed. The scale thickness increased with the temperature and time of oxidation. The rate of scale thickening rapidly increased above 900 ��, at which the rate was particularly fast in the first 20 s of oxidation. The proportion of w��stite (Fe1-yO) increased with time and temperature of oxidation, while the magnetite (Fe3O4) remained constant at about 2 ��m.
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Received: 27 May 2012
Published: 31 January 2013
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Corresponding Authors:
Xian-Jun HU
E-mail: best1705@126.com
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2013, Vol. 20 
