Comparison investigation on corrosion of SIMP and T91 exposed to liquid LBE at 450℃: the role of Si on reducing oxidation rate
Comparison investigation on corrosion of SIMP and T91 exposed to liquid LBE at 450℃: the role of Si on reducing oxidation rate
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DOI：
10.1016/j.corsci.2023.111553
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发表时间：
2023-09
影响因子：
8.3
通讯作者：
Hongpeng Zhang;Xudong Liu;Yichun Xu;Li Zhao;Tianji Peng;Changping Qin;Rui Yu;Zhiguang Wang;C. Yao
中科院分区：
文献类型：
--
作者：
Hongpeng Zhang;Xudong Liu;Yichun Xu;Li Zhao;Tianji Peng;Changping Qin;Rui Yu;Zhiguang Wang;C. Yao
对SIMP钢和T91钢在450 ℃氧饱和LBE中暴露10000 h的氧化行为进行了对比研究。结果表明，两种钢表面氧化物主要由外层的Fe3O4和内层的（Fe，Cr）3O4组成。在相同条件下，SIMP钢的耐腐蚀性能优于同类钢，这与SIMP钢中Si含量较高有关。通过第一性原理计算讨论了Si对降低氧化速率的影响。
A comparison investigation on the oxidation behavior of SIMP and T91 steels exposed to oxygen saturated LBE up to 10000 h at 450 ℃ was conducted. The results show that the surface oxides formed on both steels are mainly composed of a Fe3O4outer layer and a (Fe,Cr)3O4inner layer. Under the same conditions, SIMP steel displays a better corrosion resistance than its counterpart, which was attributed to higher Si content in SIMP steel. The Si effect on reducing oxidation rate was discussed by first-principles calculations.