Effect of bypass coupling current on corrosion resistance of twin-wire indirect arc surfacing layer

Wu, Dongting; An, Qi; Zheng, Changsong; Zhang, Yongang; Zou, Yong

doi:10.1016/j.corsci.2020.108817

Cited by 12 publications

(4 citation statements)

References 35 publications

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“…W is the Warburg impedance of semi-infinite diffusion. It indicates the presence of a mass transfer process during corrosion, most likely the diffusion of dissolved O 2 in the solution. , …”

Section: Resultsmentioning

confidence: 99%

“…It indicates the presence of a mass transfer process during corrosion, most likely the diffusion of dissolved O 2 in the solution. 3,36 The results of fitting the corresponding equivalent circuit are listed in Table 1. The polarization resistance (R p ), which is the sum of R ct and R f , was proposed to evaluate the film corrosion resistance.…”

Section: Corrosion Resistance Evaluationmentioning

confidence: 99%

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Hydrophobicity and Improved Corrosion Resistance of Weathering Steel via a Facile Sol–Gel Process with a Natural Rust Film

Sun,

Yan,

Gao

2023

ACS Appl. Mater. Interfaces

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Weathering steel, which has a protective corrosion product film, is widely used in various construction and landscaping applications. However, it causes metal contamination in the receiving ecosystem via corrosion-induced metal dissolution and rust runoff. Traditional corrosion prevention methods, such as surface coating, also suffer from environmental pollution and high maintenance costs. In this study, we propose a novel method to make the rust film hydrophobic to prevent corrosion while retaining its original appearance. The crystalline rust is used as a natural skeleton, and nano-SiO 2 particles are synthesized in situ on it by a facile sol− gel method. The microscopic analysis shows that the flower-like rust flakes provide a primary structure (micrometric scales) and the nano-SiO 2 particles form a secondary structure (nanoscale bumps), which is the essential micronanostructure for forming a hydrophobic surface. The as-synthesized film shows strong corrosion resistance, with the corrosion current density being 4 orders of magnitude lower than that of the samples without hydrophobicity. The hydrophobic surface not only prevents corrosive substances from penetrating into the rust layer but also reduces the risk of contamination through its self-cleaning properties. Therefore, the weathering steel with a hydrophobic rust film can be more stable and environmentally friendly for multiscenario applications.

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Section: Resultsmentioning

confidence: 99%

Section: Corrosion Resistance Evaluationmentioning

confidence: 99%

Hydrophobicity and Improved Corrosion Resistance of Weathering Steel via a Facile Sol–Gel Process with a Natural Rust Film

Sun,

Yan,

Gao

2023

ACS Appl. Mater. Interfaces

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“…When welding current reached 220 A, intergranular corrosion resistance remained better than that of the MIG AM surface layer, indicating that BC-TWIAW can efficiently solve the intergranular corrosion problem. Results of the previous study [22,28] showed that there are more δ-ferrite phases diffusely distributed in BC-TWIAW deposition layer. These δ-ferrite phases not only distribute inside the γ-austenite grains, but also distribute on the grain boundaries of the γ-austenite phases.…”

Section: Microstructure and Ferrite Contentmentioning

confidence: 86%

Microstructure and corrosion resistance of stainless steel produced by bypass coupling twin-wire indirect arc additive manufacturing

et al. 2021

Int J Adv Manuf Technol

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This study investigates the application of bypass coupling twin-wire indirect arc welding (BC-TWIAW) in arc additive manufacturing of 18-8 stainless steel. It is found that the droplet transfer changed from short circuit mode to stable spray mode with the welding current rising. Droplet transfer was the most stable when welding current was 200 A. Compared with the conventional MIG welding arc additive manufacturing, the efficiency of BC-TWIAW additive manufacturing can be increased by more than 30%. Electrochemical tests show that the BC-TWIAW overlay has a lower reactivation rate, higher charge transfer resistance, and lower carrier concentration, indicating that the overlay has better resistance to intergranular corrosion and pitting corrosion.

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“…For example, Wang et al [8] achieved the process of depositing CuSi3 Cu alloy onto 30CrMnSi steel plate with consumable and nonconsumable electrodes indirect arc welding (CNC-IAW) technology. Wu et al [9,10] prepared the stain steel surfacing layer with twin-wire indirect arc welding (TWIAW) and investigated its corrosion resistance behavior. The result clarified that compared with MIG surfacing layer, that of TWIAW obtained a better intergranular corrosion resistance due to the faster cooling speed during TWIAW restraining Cr23C6 precipitation.…”

Section: Introductionmentioning

confidence: 99%

Continuous contact transfer behavior in bypass coupling triple-wire indirect arc welding

Liu,

Xu,

et al. 2024

Preprint

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Continuous contact transfer mode in bypass coupling triple-wire indirect arc welding (BCTW-GIA) is proposed to pursue an optional way to ensure the high deposition rate and obtain stable depositing process. The arc behaviors, droplet transfer and process stability with different distance between the tips (d1) of the main wire and side wires and the feeding speed of main wire (FSM) were studied. With the increase d1 and FSM, the droplet transfer mode of main wire varied from explosive transfer to short-circuit transfer to bridge transfer. When the d1 was greater than 4 mm, the continuous contact transfer bypass coupling triple-wire indirect arc welding can be realized and the welding process stability was improved. With the d1 adjusted from 0 mm to 6 mm, the standard deviation of the current dropped from 123.8 to 53.8 and its variation coefficient from 117.33–39.24% at FSM = 1 m/min. The weld penetration and weld width reduced with the FSM increasing, while the weld reinforcement gradually increased.

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Effect of bypass coupling current on corrosion resistance of twin-wire indirect arc surfacing layer

Cited by 12 publications

References 35 publications

Hydrophobicity and Improved Corrosion Resistance of Weathering Steel via a Facile Sol–Gel Process with a Natural Rust Film

Hydrophobicity and Improved Corrosion Resistance of Weathering Steel via a Facile Sol–Gel Process with a Natural Rust Film

Microstructure and corrosion resistance of stainless steel produced by bypass coupling twin-wire indirect arc additive manufacturing

Continuous contact transfer behavior in bypass coupling triple-wire indirect arc welding

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