CHEMICAL AND ELECTROCHEMICAL CONDITIONS ON STEEL UNDER DISBONDED COATINGS: MATHEMATICAL MODELING OF MASS TRANSPORT AND CHEMICAL CHANGES IN CREVICES

J.J. Perdomo; J.D. Cawley

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CHEMICAL AND ELECTROCHEMICAL CONDITIONS ON STEEL UNDER DISBONDED COATINGS: MATHEMATICAL MODELING OF MASS TRANSPORT AND CHEMICAL CHANGES IN CREVICES

机译：脱脂涂层下钢的化学和电化学条件：坩埚中的传质和化学变化的数学模型

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A theoretical model has been developed to evaluate the transport processes in a crevice area formed by disbondment of a coating on a steel pipeline. This model is able to simulate concentration and conductivity distributions along the disbondment as well as potential and current distributions taking into account the changes with respect to time before steady state has been attained. The model is applied to recent experimental data on crevice corrosion of disbanded pipelines. Several conditions have been simulated including different applied potentials, electrolytes and starting steel surface conditions. Good agreement is found between modeled and measured results.

机译：已经开发出理论模型来评估在钢管区域上涂层脱粘而形成的缝隙区域中的运输过程。该模型能够模拟沿剥离的浓度和电导率分布以及电位和电流分布，并考虑到达到稳定状态之前的时间变化。该模型被应用于废弃管道裂缝腐蚀的最新实验数据。模拟了几种条件，包括不同的施加电势，电解质和起始钢表面条件。在建模结果和测量结果之间找到了很好的一致性。

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来源
《Corrosion Reviews》 |2001年第6期|共16页
作者
J.J. Perdomo; J.D. Cawley;
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原文格式 PDF
正文语种 eng
中图分类金属腐蚀与保护、金属表面处理;
关键词
cathodic protection; coating holiday; crevice corrosion; disbanded coating; potential distribution; current distribution; polarization of crevices; iron oxides; conductivity changes in crevices; modeling of crevices.; diffusion; migration;

机译：阴极保护;镀层假期;缝隙腐蚀;剥离的涂层;电位分布;电流分布;缝隙的极化;氧化铁;缝隙中的电导率变化;缝隙的模型;扩散;迁移;

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专利

1. CHEMICAL AND ELECTROCHEMICAL CONDITIONS ON STEEL UNDER DISBONDED COATINGS: MATHEMATICAL MODELING OF MASS TRANSPORT AND CHEMICAL CHANGES IN CREVICES [J] . J.J. Perdomo, J.D. Cawley Corrosion Reviews . 2001,第5a6期

机译：脱脂涂层下钢的化学和电化学条件：坩埚中的传质和化学变化的数学模型
2. Electrochemical Behavior and Stress Corrosion Sensitivity of X70 Steel Under Disbonded Coatings in Korla Soil Solution [J] . Qian Hongchang, Wang Luntao, Wang Huiru, Journal of Materials Engineering and Performance . 2016,第11期

机译：X70钢在库尔勒土壤溶液中剥离涂层下的电化学行为和应力腐蚀敏感性。
3. Electrochemical characteristic and stress corrosion behavior of API X70 high-strength pipeline steel under a simulated disbonded coating in an artificial seawater environment [J] . Wu Wei, Liu Zhiyong, Li Xiaogang, Journal of Electroanalytical Chemistry: An International Journal Devoted to All Aspects of Electrode Kinetics, Interfacial Structure, Properties of Electrolytes, Colloid and Biological Electrochemistry . 2019,第期

机译：API X70高强度管线钢在人工海水环境中模拟分离涂层下的电化学特性及应力腐蚀行为
4. A STUDY OF THE CHEMICAL AND ELECTROCHEMICAL CONDITIONS BENEATH DISBONDED COATINGS USING NUMERICAL MODELLING [C] . M.H. Alkathafi, R.A. Cottis Conference of the Australasian Corrosion Association on Corrosion Prevention . 2012

机译：使用数值模拟的分离涂层下面的化学和电化学条件研究
5. Chemical and electrochemical conditions on steel under disbonded coatings [D] . Perdomo-Diaz, Jorge Javier 1996

机译：剥离涂层下钢的化学和电化学条件
6. Anti-Bacterial and Anti-Fouling Capabilities of Poly(34-Ethylenedioxythiophene) Derivative Nanohybrid Coatings on SUS316L Stainless Steel by Electrochemical Polymerization [O] . Chuan-Chih Hsu, Yu-Wei Cheng, Che-Chun Liu, 2020

机译：通过电化学聚合对SUS316L不锈钢聚（34-亚乙基氧基噻吩）衍生物纳米组织涂层的抗细菌和抗污染能力
7. Study on Electrochemical Behavior of 20# Carbon Steel with Disbonded Coating by Scanning Kelvin Probe and Local Electrochemical Impedance Spectroscopy [O] . Changyou Wang 2020

机译：用扫描克尔文探针和局部电化学阻抗光谱研究20＃碳钢电化学行为研究
8. Stress Corrosion Cracking of Titanium Alloys - Electrochemical Mass Transport Kinetic Model, Metallurgical and Mechanical Effects, and Proposed Relation of Electrochemical, Metallurgical and Mechanical Effects Quarterly Progress Report, 1 Apr. - 30 Jun. 1967 [R] . Beck, T. R., Blackburn, M. J. 1967

机译：钛合金的应力腐蚀开裂 - 电化学质量传递动力学模型，冶金和机械效应，以及电化学，冶金和机械效应的建议关系季度进展报告，4月1日 - 1967年6月30日

CHEMICAL AND ELECTROCHEMICAL CONDITIONS ON STEEL UNDER DISBONDED COATINGS: MATHEMATICAL MODELING OF MASS TRANSPORT AND CHEMICAL CHANGES IN CREVICES

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