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INITIAL ATMOSPHERIC CORROSION OF HOT ROLLED STRIP STEELS |
ZHOU Xianliang1,2, ZHU Min2, XUE Huibin3, PENG Xinyuan2, YE Zhiguo2 |
1. Key Laboratory of Nondestructive Test, Ministry of Education, Nanchang Hangkong University, Nanchang 330063
2. School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063
3. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 |
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Abstract SEM XRD were used to analyse the phase composition and structure of oxide scales on different hot rolled strip steels. Research on the relationship between oxide scale of hot rolled strip steel and its corrosion resistance was carried out by heat-damp test, polarization, electrochemical impedance spectroscopy (EIS) and scanning kelvin probe (SKP). The correlation between mass gain and test time accorded with exponential rule as ΔW=Dtn in the heat-damp test. The experiment results showed that the initial weather resistance of oxide scale on the WL510 steel was better than that of B510L steel. However, in the later stage of atmosphere corrosion, corrosion development trends of B510L steel may more slowly than that of WL510 steel.
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Received: 25 January 2010
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Corresponding Authors:
xianliang
E-mail: zmii2009@163. com
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