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Corrosion Mechanism of Corrosion-Resistant Steel Developed for Bottom Plate of Cargo Oil Tanks 被引量：9

Corrosion Mechanism of Corrosion-Resistant Steel Developed for Bottom Plate of Cargo Oil Tanks
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摘要 A new type of corrosion-resistant steel consisting of ferrite and bainite phases was developed for cargo oil tanks of crude oil tankers. The corrosion rate of this new steel was 0.22 mm/a, which was equivalent to ca. 1/5 of the criterion（≤1 mm/a） for corrosion-resistant steels. The composition and element distribution of the corrosion products were investigated by micro-Raman spectrometry and energy dispersive spectrometer. The results demonstrated that the corrosion product wascomposed of α-FeOOH, Fe3O4 and a continuous Cu enrichment layer. This kind of corrosion product was protective to the steel matrix and accounted for the enhancement of the corrosion resistance of the new developed steel. A new type of corrosion-resistant steel consisting of ferrite and bainite phases was developed for cargo oil tanks of crude oil tankers. The corrosion rate of this new steel was 0.22 mm/a, which was equivalent to ca. 1/5 of the criterion（≤1 mm/a） for corrosion-resistant steels. The composition and element distribution of the corrosion products were investigated by micro-Raman spectrometry and energy dispersive spectrometer. The results demonstrated that the corrosion product wascomposed of α-FeOOH, Fe3O4 and a continuous Cu enrichment layer. This kind of corrosion product was protective to the steel matrix and accounted for the enhancement of the corrosion resistance of the new developed steel.
作者 Feilong SUN Xiaogang LI Fan ZHANG Xuequn CHENG Cheng ZHOU Nianchun WU Yuqun YIN Jinbin ZHAO
机构地区 Corrosion and Protection Center Key Laboratory of Corrosion and Protection School of Materials Science and Engineering Research Institute
出处 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2013年第3期257-264,共8页 金属学报（英文版）
基金 financial supported by the Fundamental Research Funds for the Central Universities (No.FRF-PT-12-144A) the National Natural Science Foundation of China (Nos.51171025 and 51271023) National network of Field Observation & Scientific Research on Material Environmental Corrosion
关键词 Alloying elements CORROSION Low alloy steel Raman spectroscopy SEM Alloying elements Corrosion Low alloy steel Raman spectroscopy SEM
分类号 TG174.3 [金属学及工艺—金属表面处理]
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Acta Metallurgica Sinica(English Letters)
2013年 第3期

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