Corrosion behaviour and galvanic coupling with steel of Al-based coating alternatives to electroplated cadmium
Corrosion behaviour and galvanic coupling with steel of Al-based coating alternatives to electroplated cadmium
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电镀镉的铝基涂层替代品的腐蚀行为和与钢的电耦合
DOI：
10.1016/j.matchemphys.2013.04.035
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发表时间：
2013
影响因子：
4.6
通讯作者：
Fasuba O
中科院分区：
文献类型：
--
作者：
Fasuba O
研究了铝锌薄片无机旋涂涂层、铝基浆料喷涂层、电弧喷铝涂层和电镀镉后裸钢与钢之间的电偶腐蚀行为。用开路电位、动电位极化和电化学噪声测量研究了涂层在3.5wt.%氯化钠溶液中的牺牲行为和电偶行为。用扫描电子显微镜、能谱和X射线衍射仪对涂层进行了表征。实验结果表明，与其他涂层相比，铝基浆料喷涂涂层具有更接近钢基体的开路电位、较低的腐蚀电流密度和较正的腐蚀电位。就所研究的涂层对钢的电偶适合性而言，铝锌薄片无机旋涂涂层和铝基浆料喷涂涂层的电偶电流都比电弧喷涂铝涂层和电镀镉涂层的低。这一行为证实了其优越的阴极保护能力和与其他测试涂层的电偶兼容性。电化学噪声测量提供了有关涂层电偶行为的准确信息，这可以通过叠加涂层和裸钢的动电位腐蚀扫描获得的数据来补充，前提是这两种材料之间的腐蚀电位差不超过300 mV。
The galvanic corrosion behaviour of bare steel coupled to steel with an Al–Zn flake inorganic spin coating, an Al-based slurry sprayed coating, an arc sprayed Al coating and electroplated cadmium has been investigated. The sacrificial and galvanic behaviour of the coatings was studied in 3.5 wt. % NaCl solution using open-circuit potential, potentiodynamic polarisation and electrochemical noise measurements. The coatings were characterised by scanning electron microscopy, energy dispersive X-ray spectroscopy and X-ray diffraction. Experimental results showed that the Al-based slurry sprayed coating exhibited an open-circuit potential closer to the steel substrate than other coatings, as well as a low corrosion current density and a more positive corrosion potential. In terms of the galvanic suitability of the investigated coatings for the steel substrate, both the Al–Zn flake inorganic spin coating and the Al-based slurry sprayed coating show low galvanic current, in comparison with the arc sprayed Al coating and electroplated cadmium. This behaviour confirms their superior cathodic protection capability and galvanic compatibility over other coatings tested. Electrochemical noise measurements provide accurate information on the coatings' galvanic behaviour, which can be complimented by the data obtained from superposition of potentiodynamic corrosion scans of the coating and bare steel, provided that the corrosion potential difference between the two materials does not exceed 300 mV.
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影响因子：
1.6
作者：
P. Volovitch;M. Serdechnova;K. Ogle
通讯作者：
P. Volovitch;M. Serdechnova;K. Ogle
AA7075铝合金防腐蚀涂层的电偶相容性
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
Z. F. Lodhi;W. Hamer;J. Mol;H. Terryn;J. de Wit
通讯作者：
J. de Wit
DOI：
--
发表时间：
1971
期刊：
影响因子：
--
作者：
T. Biegler;E. Gonzalez;R. Parsons
通讯作者：
R. Parsons
钢涂层的电偶腐蚀：铝与镉和锌的比较
影响因子：
8.3
作者：
W. Kautek
通讯作者：
W. Kautek
DOI：
--
发表时间：
1966
期刊：
影响因子：
--
作者：
B. Lovreček;N. Marinčić
通讯作者：
N. Marinčić