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| Corrosion Resistance of Weathering Steel of RE Exposed in Marine Atmospheric Environment for One Year |
| Received:December 27, 2016 Revised:May 15, 2017 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2017.04.005 |
| KeyWord:weathering steel rare earth corrosion resistance |
| Author | Institution |
| TAO Peng |
1.Qingdao Research institute for Marine Corrosion, Qingdao, , China;2.Shandong University of Science and Technology, Qingdao, , China |
| SUN Jin-quan |
Shandong University of Science and Technology, Qingdao, , China |
| DONG Cai-chang |
Qingdao Research institute for Marine Corrosion, Qingdao, , China |
| YANG Hai-yang |
Qingdao Research institute for Marine Corrosion, Qingdao, , China |
| ZHANG Bo |
Qingdao Research institute for Marine Corrosion, Qingdao, , China |
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| Abstract: |
| Objective To research corrosion resistance of ordinary weathering steel and rare earth weathering steel (Cu-P-RE steel). Methods By the test of corrosion rate, the electronic probe and metallurgical technology, the effect of RE on characteristics of corrosion resistance was discussed. Results After RE was added to the weathering steel, the rust layer became more continuous and denser, and the number of crack and holes decreased. Conclusion The physical barrier effect of rust layer including RE on corrosive medium is relatively perfect, which could restrain the corrosion of corrosive medium to steel matrix and enhance the protective ability of matrix. The existence of RE elements is helpful to reduce the corrosion rate of weathering steel in the marine atmospheric environment of Qingdao and improve the atmospheric corrosion resistance of weathering steel. |
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