基于毛细管微电池的海洋大气环境中焊接接头的电化学腐蚀行为

IF 6.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

npj Materials Degradation Pub Date : 2024-01-04 DOI:10.1038/s41529-023-00417-7

Xinyu Wang, Feng Huang, Qian Hu, Jiawei Zhang, Jin Liu

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引用次数: 0

摘要

研究了 Q690 贝氏体耐候钢焊接接头在海洋大气中的微观电化学腐蚀动力学行为和机理。结果表明，Q690 焊点的不同区域之间形成了微观电化学腐蚀电池。微观电化学腐蚀的动力学行为可分为四个阶段：微观电化学腐蚀的开始和发展、电化学腐蚀速率的降低、电偶极性反转和电化学效应的消失。Q690 钢及其焊接接头的腐蚀速率差异与微电化学腐蚀动力学行为密切相关。

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Galvanic corrosion behavior of welded joint in marine atmosphere environment based on capillary microcell

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Galvanic corrosion behavior of welded joint in marine atmosphere environment based on capillary microcell

The kinetical behavior and mechanism of micro-galvanic corrosion of Q690 bainitic weathering steel welded joint in marine atmosphere were investigated. The results showed that a micro-galvanic corrosion cell formed among different regions of the Q690 welded joint. The kinetical behavior of micro-galvanic corrosion could be divided into four stages: the initiation and development of micro-galvanic corrosion, the decreasing of galvanic corrosion rate, the polarity reversal of galvanic couple, and the disappearance of galvanic effect. The difference of corrosion rate between Q690 steel and its welded joint is closely related to the micro-galvanic corrosion kinetic behavior.

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来源期刊

npj Materials Degradation MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

7.80

自引率

7.80%

发文量

审稿时长

6 weeks

期刊介绍： npj Materials Degradation considers basic and applied research that explores all aspects of the degradation of metallic and non-metallic materials. The journal broadly defines ‘materials degradation’ as a reduction in the ability of a material to perform its task in-service as a result of environmental exposure. The journal covers a broad range of topics including but not limited to: -Degradation of metals, glasses, minerals, polymers, ceramics, cements and composites in natural and engineered environments, as a result of various stimuli -Computational and experimental studies of degradation mechanisms and kinetics -Characterization of degradation by traditional and emerging techniques -New approaches and technologies for enhancing resistance to degradation -Inspection and monitoring techniques for materials in-service, such as sensing technologies