| Influence of Inclusion on Corrosion Behavior of E36 Grade Low-alloy Steel in Cargo Oil Tank Bottom Plate Environment |
| |
| 作者姓名： | Hui-bin WU Jin-ming LIANG Di TANG Xiao-tong LIU Peng-cheng ZHANG Yuan-jie YUE |
| |
| 作者单位： | National Engineering Research Center of Advanced Rolling Technology,University of Science and Technology Beijing |
| |
| 基金项目： | Item Sponsored by National Science and Technology Major Project of the Ministry of Science and Technology of China(2011ZX05016-004);National Key Technology Research and Development Program of the Ministry of Science and Technology of China(2011BAE25B00) |
| |
| 摘 要： | Corrosion behavior of low-alloy steel was investigated in simulated cargo oil tank （COT） bottom plate service environment （10% NaCl solution, pH = 0.85）. The corrosion behavior of inclusion was studied by in-situ scanning electron microscopy （SEM） and energy dispersive spectroscopy （EDS）. It was found that pitting corrosion was inclined to occur around the place where inclusions exist. After initial corrosion, an area of 10-20μm in diameter was formed as a cireinate cathode around the edge of inclusion. MnS inclusion dissolved in the simulated COT corrosion solution before low-alloy steel matrix, and pitting was formed at the place where MnS dissolved. TiO2 inclusion dissolved in the simulated COT corrosion solution after low alloy steel matrix, and pitting was formed at the place where steel matrix dissolved. The corrosion tended to occur at the area where the curvature radius of inclusion is smaller. The size of round TiO2 inclusions had little influence on corrosion behavior in this certain environment.
|
| 关 键 词： | 腐蚀行为 低合金钢 货油舱 环境 底板 扫描电子显微镜 NaCl溶液 腐蚀溶液 |
| 收稿时间： | 13 September 2013 |
Influence of Inclusion on Corrosion Behavior of E36 Grade Low-alloy Steel in Cargo Oil Tank Bottom Plate Environment |
| |
| Hui-bin WU,Jin-ming LIANG,Di TANG,Xiao-tong LIU,Peng-cheng ZHANG,Yuan-jie YUE.Influence of Inclusion on Corrosion Behavior of E36 Grade Low-alloy Steel in Cargo Oil Tank Bottom Plate Environment[J].Journal of Iron and Steel Research,2014,21(11):1016-1021. |
| |
| Authors: | Hui-bin WU Jin-ming LIANG Di TANG Xiao-tong LIU Peng-cheng ZHANG Yuan-jie YUE |
| |
| Abstract: | Corrosion behavior of low-alloy steel was investigated in simulated cargo oil tank (COT) bottom plate service environment (10% NaCl solution, pH = 0.85). The corrosion behavior of inclusion was studied by in-situ scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). It was found that pitting corrosion was inclined to occur around the place where inclusions exist. After initial corrosion, an area of 10–20 μm in diameter was formed as a circinate cathode around the edge of inclusion. MnS inclusion dissolved in the simulated COT corrosion solution before low-alloy steel matrix, and pitting was formed at the place where MnS dissolved. TiO2 inclusion dissolved in the simulated COT corrosion solution after low-alloy steel matrix, and pitting was formed at the place where steel matrix dissolved. The corrosion tended to occur at the area where the curvature radius of inclusion is smaller. The size of round TiO2 inclusions had little influence on corrosion behavior in this certain environment. |
| |
| Keywords: | cargo oil tank corrosion behavior low-alloy steel pitting mechanism inclusion |
| 本文献已被 CNKI 维普 ScienceDirect 等数据库收录！ |
