热轧钢筋在混凝土中的腐蚀性能优化

IF 1.5 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Engineering, Science and Technology Pub Date : 2022-07-21 DOI:10.1080/1478422X.2022.2101179

Qinghai Zhou, Yanbin Yin, Zhiming Liu, Jiongming Zhang

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引用次数: 0

摘要

摘要为了优化热轧钢筋的耐腐蚀机理，通过扫描电子显微镜、X射线衍射、拉曼光谱、电化学和大气腐蚀试验，研究了不同回火温度和高富氧氧化时间对其耐腐蚀性能的影响。钢筋的氧化层厚度可达10 μm，在850°C下高富氧氧化1小时后很少腐蚀 s、其表现出优异的耐腐蚀性。电化学测试结果表明，1 850°C下高富氧氧化的s约为0.02 mA cm−2，比685°C（0.045 mA）下加热试样的温度低56.4% cm−2）。拉曼光谱结果表明，685°C加热试样的锈层主要由α-Fe2O3、γ-FeOOH和α-FeOOH组成，1 850°C下的高富氧氧化主要由α-Fe2O3和Fe3O4组成，它们保持了原始的氧化层形态。

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Optimising the corrosion performance of hot-rolled steel bar in concrete

ABSTRACT To optimising the corrosion resistance mechanism of hot-rolled steel bar, the effects of different tempering temperatures and high-oxygen-rich oxidation times were studied by scanning electron microscopy, X-ray diffraction, Raman spectroscopy, electrochemical and atmospheric corrosion tests. The thickness of the oxide layer of the rebar could reach 10 μm and rarely corroded after high-oxygen-rich oxidation at 850°C for 1 s, which exhibits superior corrosion resistance. The electrochemical test results showed that the I corr value after 1 s of high-oxygen-rich oxidation at 850°C was about 0.02 mA cm−2, which was 56.4% lower than that of the heated specimen at 685°C (0.045 mA cm−2). The results of Raman spectroscopy showed that the rust layer of the heated specimen at 685°C mainly consisted of α-Fe2O3, γ-FeOOH and α-FeOOH, and the oxidised layer after 1 s of high-oxygen-rich oxidation at 850°C mainly consisted of α-Fe2O3 and Fe3O4, which maintained the original oxidised layer morphology.

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来源期刊

Corrosion Engineering, Science and Technology 工程技术-材料科学：综合

CiteScore

3.20

自引率

5.60%

发文量

审稿时长

3.4 months

期刊介绍： Corrosion Engineering, Science and Technology provides broad international coverage of research and practice in corrosion processes and corrosion control. Peer-reviewed contributions address all aspects of corrosion engineering and corrosion science; there is strong emphasis on effective design and materials selection to combat corrosion and the journal carries failure case studies to further knowledge in these areas.