钢筋热轧皮的氧化还原及主要载流子

王新; 路新瀛

doi:10.13204/j.gyjzG19113018

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钢筋热轧皮的氧化还原及主要载流子

doi: 10.13204/j.gyjzG19113018

王新,
路新瀛^,

清华大学土木工程系, 北京 100084

详细信息

作者简介:
王新,男,1993年出生,硕士研究生。

通讯作者:
路新瀛,1966年出生,博士,教授,博士生导师,luxy@mail.tsinghua.edu.cn。

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- 文章访问数: 75
- HTML全文浏览量: 9
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- 被引次数: 0
出版历程
- 收稿日期: 2019-11-18

REDOX REACTIONS AND MAIN CARRIERS IN MILL SCALES OF REBARS

WANG Xin,
LU Xinying^,

Department of Civil Engineering, Tsinghua University, Beijing 100084, China

摘要

摘要: 用Raman光谱、X射线衍射、背散射电子照相和Mott-Schottky曲线研究饱和Ca（OH）₂溶液中钢筋热轧皮的氧化还原行为和电荷传输特性。结果表明：钢筋热轧皮在阳极极化时可发生由外及里的氧化，轧皮表层的Fe₃O₄转变为α-Fe₂O₃；阴极极化时发生还原，轧皮表层的α-Fe₂O₃消失；在钢筋基底与热轧皮界面处却未见任何新相产生；带轧皮钢筋在饱和Ca（OH）₂溶液中呈n型半导体传输特性，主要载流子为间隙铁离子。
- 钢筋 /
- 热轧皮 /
- 氧化还原 /
- 载流子
Abstract: Raman spectroscopy, XRD, backscattered electronic images and Mott-Schottky plots were used to explore the redox properties and charge transport characteristics in mill scales of rebars in saturated Ca(OH)₂ solution. The results showed that mill scales of rebars could be inwardly oxidized during anodic polarization, and the Fe₃O₄ in the surface layer of the mill scale was transformed into α-Fe₂O₃. Reduction happened when it was cathodically polarized, and the α-Fe₂O₃ in the skin layer disappeared. No new phase was found at the matrix-scale interface. Rebars with mill scales had an n-type semiconductor transporting characteristics in saturated Ca(OH)₂ solution and the main carriers were interstitial iron ions.
- rebar /
- mill scale /
- redox /
- carrier

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参考文献(5)

李源晋. 带轧皮钢筋在模拟混凝土孔溶液中的化学稳定性研究[D]. 北京:清华大学, 2016.

王新,林飞,路新瀛. 模拟混凝土孔溶液中钢筋热轧皮的阴极极化还原[J]. 工业建筑, 2019, 49(5):115-120.

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