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| Computational Insights into Interactions between Ca Species and ��-Fe2O3 (0 0 1) |
| Yan-qin SUN1,Qing L�n2,Xin-yu WAN2,Shu-hui ZHANG2,Jiong-ming ZHANG3 |
1. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China
2. College of Metallurgy and Energy, Hebei United University, Tangshan 063009, Hebei, China
3. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract CaCl2 can be sprayed onto sinter surface, which can improve the low temperature reduction degradation index (RDI+3. 15) of sinter. This has been recognized; however, there are various opinions on the inhibition mechanism of it. At the same time, the corrosion of Cl element on equipment is very serious. First-principle calculations based on density functional theory were performed to investigate the binding mechanisms of calcium species on a ��-Fe2O3 (0 0 1) surface. This is crucial in demonstrating the role of the CaCl2 on improving the low temperature reduction degradation index. It has been determined that Cl could greatly increase the adsorption of the vacuum layer for the Ca/Fe2O3 system and the relaxation produced by adsorption made bond length decrease, bond energies increase and structure compact. Those are the main reasons that inhibiting the reduction disintegration of sinter.
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Received: 26 November 2012
Published: 15 April 2014
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Corresponding Authors:
Yan-Qin SUN
E-mail: sunyanqin@heuu.edu.cn
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| [1] |
Muna A. ABU-DALO,Nathir A. F. AL-RAWASHDEH,Ahmed A. MUTLAQ. Green Approach to Corrosion Inhibition of Mild Steel by Lignin Sulfonate in Acidic Media[J]. Chinese Journal of Iron and Steel, 2016, 23(7): 722-732. |
| [2] |
A. V. Shanbhag,T. V. Venkatesha,B. M. Praveen,S. B. Abd Hamid. Inhibition Effects of Chloroquinolines on Corrosion of Mild Steel in Hydrochloric Acid Solution[J]. Chinese Journal of Iron and Steel, 2014, 21(8): 804-808. |
| [3] |
M Niknejad Khomami,I Danaee,A A Attar,M Peykari. Corrosion of Alloy Steel in 30% Ethylene Glycol Solution and CrO2-4 Under Hydrodynamic Condition[J]. Chinese Journal of Iron and Steel, 2013, 20(6): 82-87. |
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2014, Vol. 21 
