On the interference mechanism of stray current generated by DC tram on pipeline corrosion

Peng, Xun; Huang, Zhiqiang; Chen, Ben; Liu, Deming; Li, Haikun

doi:10.1016/j.engfailanal.2020.104760

Cited by 13 publications

(4 citation statements)

References 18 publications

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“…Yu et al 15 studied the corrosion characteristics of the semi-circular steel plate for shield tunnel reinforcement under the action of DC stray current, and proved that bidirectional input current has a greater accelerated corrosion effect on the steel plate than unidirectional input current. Xun et al 16 studied the interference mechanism of DC stray current on pipeline corrosion, and confirmed that the current accelerated the corrosion of materials by affecting their electrochemical parameters. The study by Shi et al 17 suggested that the applied current would not only reduce the passivation ability of steel, but also reduce its pitting corrosion resistance.…”

Section: Introductionmentioning

confidence: 94%

Comparative study on mechanism of DC and AC current on corrosion of copper–aluminium composites

Cheng,

Zhang,

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

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In this study, corrosion behaviours accelerated by neutral salt spray were thoroughly investigated on copper–aluminium composites with 3 wt% concentration NaCl for 72 h under DC and AC current respectively. The similarities and differences of the corrosion mechanism of the copper–aluminium composite under the two kinds of current were analysed by weight loss analysis, scanning electron microscopy, energy-dispersive X-ray spectroscopy and electrochemical detection methods. It can be concluded that there are two opposing influences of the current on the corrosive effects, including acceleration by the impressed current and inhibition by the heating effect. Of these, the inhibition effect on corrosion is more obvious, as the thermal effect of DC current is greater under the same current value. It is worth noting that the directional migration of ions caused by DC current will affect the degree of corrosion and the composition of the corrosion products on the surfaces of both sides of the samples, which is a unique characteristic not seen with AC current.

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Section: Introductionmentioning

confidence: 94%

Comparative study on mechanism of DC and AC current on corrosion of copper–aluminium composites

Cheng,

Zhang,

et al. 2024

Corrosion Engineering, Science and Technology: The Internationa

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“…Stray current refers to the current that does not flow according to the specified loop, which is usually divided into DC stray current and AC stray current. Stray current has a wide source and strong randomness, which is easy to lead to pipeline defects such as corrosion and perforation, and is one of the important factors affecting the normal operation of buried steel pipelines [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Development of stray current detection system for buried steel pipeline based on STM32

Li,

Chen,

Yang

et al. 2024

Third International Conference on Testing Technology and Automation Engineering (TTAE 2023)

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Stray current corrosion is an important factor affecting the safe operation of buried steel pipelines. Aiming at the problems such as single function, low accuracy and poor usability of configuration software of existing stray current detection equipment, a stray current detection system based on STM32 and Labview for buried steel pipelines is designed, which can simultaneously measure a variety of stray current interference evaluation indexes. The system consists of two parts: acquisition system and host computer. The hardware circuit of acquisition system is designed in modular way, and the host computer is built by joint programming of Labview software and MATLAB software. The experimental results show that the measurement error of the system is less than 0.1%, which meets the standard requirements. The system has the feasibility of field application and popularization.

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“…Buried pipelines are subjected to external and internal corrosion. External corrosion can be corrosion induced by microorganisms (Liu et al, 2021), generated by stray currents (Peng et al, 2020), or induced by other aggressive factors (Liu et al, 2019). Considering the internal corrosion, the transports capacity of pipelines is related to the internal pipe roughness (Mattioli et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Internal corrosion prevention in slurry pipelines using nitrogen gas: a case study

Torres,

Lins,

Mattioli

et al. 2024

REM, Int. Eng. J.

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The transport capacity of the slurry pipelines is related to the internal roughness of the pipe. Thus, the application of corrosion protection methods is of fundamental importance, both in the operational phase and in times of temporary shutdown. In addition, corrosion also affects the service life of the duct. The studied pipeline was hibernated with nitrogen using the ABNT NBR 15280-2 standard as a reference and remained hibernated for 3.5 years. Chemical, mineralogical, and microstructural analyses were carried out on samples of materials removed from the pipeline interior during the hibernation period. The most striking phase found was magnetite, with botrioidal morphology, formed by the oxidation of steel in the pipeline. After reactivation, the pipeline was inspected by smart pigs with ultrasound and MFL technologies. It was found that the corroded regions are more concentrated in the initial kilometers of the sections, where important depths of corrosion were also observed, as well as higher rates of corrosion and erosion, which show the influence of the operational phase in the development of the pipeline corrosive process and wear. Thus, the application of the nitrogen hibernation process in long-distance pipelines proved to be feasible for long periods of time. However, improvements are suggested in this article to make the process more robust.

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On the interference mechanism of stray current generated by DC tram on pipeline corrosion

Cited by 13 publications

References 18 publications

Comparative study on mechanism of DC and AC current on corrosion of copper–aluminium composites

Comparative study on mechanism of DC and AC current on corrosion of copper–aluminium composites

Development of stray current detection system for buried steel pipeline based on STM32

Internal corrosion prevention in slurry pipelines using nitrogen gas: a case study

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