Corrosion Behavior of Weathering Steel Under Thin Electrolyte Layer at Different Relative Humidity

Corrosion Behavior of Weathering Steel Under Thin Electrolyte Layer at Different Relative Humidity
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不同相对湿度下薄电解质层下耐候钢的腐蚀行为

DOI:
10.1007/s11665-017-3101-0
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发表时间:
2017
影响因子:
2.3
通讯作者:
Cao Fahe
Cao Fahe
中科院分区:
材料科学4区
文献类型:
--
作者:
Xia Yan;Liu Pan;Zhang Jianqing;Cao Fahe

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采用阴极极化曲线、电化学阻抗谱、电化学噪声、SEM/EDS、XRD和拉曼光谱等方法研究了耐候钢在不同相对湿度(RH)的薄电解质层(TEL)下的腐蚀行为。结果表明,在腐蚀初期,当TEL初始厚度大于100 μm时,腐蚀速率随RH的降低而增大;在腐蚀中后期,RH、初始TEL厚度和腐蚀产物对耐候钢的腐蚀行为有影响。将TEL腐蚀分为3种类型,并提出了在TEL和本体溶液作用下耐候钢的腐蚀模型。
The corrosion behavior of weathering steel under thin electrolyte layer (TEL) at different relative humidity (RH) was investigated by cathodic polarization, electrochemical impedance spectroscopy, electrochemical noise, SEM/EDS, XRD and Raman spectroscopy. The results indicate that during the initial stage, the corrosion rate increases as the RH decreases when the initial thickness of TEL is above 100 μm. During the middle and final corrosion stages, the corrosion behavior of weathering steel is influenced by RH, the initial thickness of TEL and corrosion product. The TEL corrosion is divided into three types, and a weathering steel corrosion model under TEL and bulk solution is also proposed.
DOI: 10.1016/j.electacta.2006.01.050
发表时间: 2006-06
影响因子: 6.6
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