A study on the local corrosion behavior and mechanism of electroless Ni–P coatings under flow by using a wire beam electrode

Tang, Yutao; Wang, Qinying; Pei, Rui; Yao, Xi; Dong, Lijun; Bai, Shu‐Lin; Wan, Shanhong

doi:10.1039/c9ra03814k

Cited by 7 publications

(4 citation statements)

References 23 publications

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“…Later it was used to quantify the electrochemical inhomogeneity on oil-painted metal and the protective ability of rustproofing oil coating [5,15,104–113]. Electrode arrays of various designs were also used in various experiments, often together with electrochemical impedance measurements, for assessing the anti-corrosion performance of protective polymer coatings such as epoxy coatings [114–116], waterborne coatings [117,118], Ni-P coatings [119], enamel coatings [120] and anti-corrosion oil films [121].…”

Section: Electrode Array Probes Designed For Various Applicationsmentioning

confidence: 99%

An overview of progresses and challenges of electrochemically integrated multi-electrode arrays for probing localised corrosion in complex environmental conditions

Tan

2023

Corrosion Engineering, Science and Technology: The Internationa

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Since the electrochemically integrated multi-electrode array, often referred to as the wire beam electrode, was initially developed for corrosion studies in 1990s, remarkable progresses have been made in its applications for probing and monitoring various forms of localised corrosion that are difficult-to-measure by conventional methods. This paper provides a brief overview of diverse and innovative applications of variously designed and constructed electrode array probes for measuring localised corrosion under complex environmental conditions with particular focus on the discussion of challenges and obstacles that prevent wider applications of electrode arrays. Discussion on future perspectives have included suggestions on the innovative design and fabrication of multi-scale, three-dimensional, complex shaped and patterned electrode arrays for simulating microstructural features of heterogeneous alloys and thoughts on the future integration of corrosion monitoring data and data analytics, machine learning and artificial intelligence for future prediction, modelling and prevention of corrosion in industrial applications.

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Section: Electrode Array Probes Designed For Various Applicationsmentioning

confidence: 99%

An overview of progresses and challenges of electrochemically integrated multi-electrode arrays for probing localised corrosion in complex environmental conditions

Tan

2023

Corrosion Engineering, Science and Technology: The Internationa

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“…The way for processing substrate can be found in the published literature. 20) Third, the achieved NiP coating was placed in a furnace, the rate of temperature increased in the furnace was 10°C/min. The coating was kept the temperature at 400°C for 1 hour and cooled in the furnace for 20 minutes, then taken it out, the NiP coating (NiP) and the heat-treated NiP coating (h-NiP) as a comparison.…”

Section: Electroless Nip Coatingmentioning

confidence: 99%

Erosion-Corrosion Behavior and Mechanism of Heated Electroless Ni–P Coating under Flow

Tang

Wang

Guo³

et al. 2020

Mater. Trans.

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To study on erosion-corrosion behavior and mechanism of NiP coating (NiP) and NiP coating after heat treatment at 400°C (h-NiP) in liquid flow and solid-liquid flow, the numerical simulation, microstructure, and electrochemical methods were applied. It could be seen that the spherical structure of the coating surface was no longer dense, and the coating changed from amorphous to crystalline after heat treatment at 400°C. Numerical simulation showed that the coating possessed a higher velocity and a small static pressure at the edge in the straight pipe. The electrochemical analysis showed that the i corr of NiP and h-NiP became larger and the R p became smaller as the solution speed increased, the i corr of h-NiP was larger than that of NiP, the R p of NiP was larger than that of h-NiP. In addition, the both coating had a higher i corr in the solid-liquid flow than that of the liquid flow at the same speed. The results indicated that the corrosion resistance of NiP coating was reduced because it had become the crystal after heat treatment at 400°C. The numerical simulation was helpful to reveal the local stress information of NiP coating under flow.

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“…Wire beam electrode (WBE) is an electrochemical testing technology from the 1990s [14]. Different from the traditional monolithic electrode, WBE is a multi-electrode, which helps get the electrochemical information of the local area on the surface of the working electrode, and is used to study the mechanism of crevice corrosion [15,16]. Wang et al [17] found that LAM Hastelloy C22 was more resistant to corrosion in oxidising acid because a dense oxide film formed, while it showed obvious local corrosion in hydrochloric acid.…”

Section: Introductionmentioning

confidence: 99%

Crevice corrosion behaviour and mechanism of laser additive manufacturing nickel-based alloy by using wire beam electrode

Wang

Tan

et al. 2023

Corrosion Engineering, Science and Technology

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The wire beam electrode (WBE) of laser additive manufacturing (LAM) nickel-based alloy was prepared to help study its crevice behaviour and mechanism at different area in the crevice with different size. The results show that the LAM nickel-based alloy with the crevice size of 0.1 and 0.3 mm presents crevice corrosion characteristics at 1 day and 3 days due to the formation of oxygen-concentration cell at the former two cases caused by the difficult migration of oxygen from the outside into the crevice. The corrosion at the middle and inside of the crevice is more serious than the outside, which is reflected by the 29.92% lower contents of O 2− at the inside than that at the outside of the crevice. Locally, inter-phase corrosion appears between the uniform nickel-based alloy matrix and the insoluble oxides at the inside of the crevice.

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A study on the local corrosion behavior and mechanism of electroless Ni–P coatings under flow by using a wire beam electrode

Abstract: The local corrosion behavior and mechanism of Ni–P coatings in an NaCl solution with different flow speeds were investigated through a wire beam electrode with morphological, elemental and electrochemical analyses as well as numerical simulations.

Cited by 7 publications

References 23 publications

An overview of progresses and challenges of electrochemically integrated multi-electrode arrays for probing localised corrosion in complex environmental conditions

An overview of progresses and challenges of electrochemically integrated multi-electrode arrays for probing localised corrosion in complex environmental conditions

Erosion-Corrosion Behavior and Mechanism of Heated Electroless Ni–P Coating under Flow

Crevice corrosion behaviour and mechanism of laser additive manufacturing nickel-based alloy by using wire beam electrode

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