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| CORROSION BEHAVIOR OF WEATHERING STEEL WITH HIGH MANGANESE CONTENT IN CONDITION SIMULATIING INDUSTRIAL ATMOSPHERE |
| WANG Bo1, LU Kai1, WANG Jianjing1, JIANG Maofa2,WANG Deyong2, LIU Chengjun2 |
1. Laiwu Steel Group Ltd., Laiwu 271104
2. School of Materials and Metallurgy, Northeastern University, Shenyang 110819 |
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Abstract In order to clarify the influence of elemental Mn on corrosion resistance of weathering steel in solution simulating industrial atmosphere, EIS (electrochemical impedance spectrum) were measured and the obtained results were verified by EPMA (electron probe micro-analyzer). EIS tests showed that, at the early stage of corrosion, the weathering steel with high Mn content had a more remarkable pitting generation characteristic than the reference steel. At the late stage of corrosion, two experimental steels had comparable corrosion resistance. The result of EPMA proved that Cu and Cr were main contributors to form protective rust layer because they were enriched at the interface between inner rust layer and substrate but no enrichment of Mn in the rust was observed.
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Received: 18 June 2009
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Corresponding Authors:
Wang Bo
E-mail: wz8295@163.com
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