Galvanic Corrosion Testing

Zhang, X. G.

doi:10.1002/9780470872864.ch80

Cited by 7 publications

(5 citation statements)

References 3 publications

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“…Some variables such as corrosion potentials of anode and cathode, as well as their relative surface areas, can affect the rate of the galvanic corrosion [ 23 ] and therefore the performance of GF process in terms of pollutant degradation and electrical energy production. First, the effect of cathode material on performance of GF process was examined.…”

Section: Resultsmentioning

confidence: 99%

“…Another important factor in electrical energy obtained with galvanic cell is the effect of the surface area ratio of anode and cathode that directly affects galvanic current [ 23 ]. The Evans diagram indicates that the copper cathode is the rate-limiting electrode during galvanic corrosion.…”

Section: Resultsmentioning

confidence: 99%

“…Iron is contacted with a more noble metal that acts as a cathode and the more negative iron metal becomes an anode. In this galvanic cell, iron anode corrodes at an accelerated rate and the cathode is protected from corrosion [ 23 ]. Therefore, iron metal is used as a sacrificial anode and is continuously consumed by anodic dissolution reaction, which permits to increase the quantity of ferrous ions produced in solution.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Energy-from-Waste Approach for Electrical Energy Production by Galvano–Fenton Process

et al. 2021

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A novel approach allowing the production of electrical energy by an advanced oxidation process is proposed to eliminate organic micropollutants (MPs) in wastewaters. This approach is based on associating the Galvano–Fenton process to the generation of electrical power. In the previous studies describing the Galvano–Fenton (GF) process, iron was directly coupled to a metal of more positive potential to ensure degradation of organic pollutants without any possibility of producing electrical energy. In this new approach, the Galvano–Fenton process is constructed as an electrochemical cell with an external circuit allowing recovering electrons exchanged during the process. In this study, Malachite Green (MG) dye was used as a model of organic pollutant. Simultaneous MG degradation and electrical energy production with the GF method were investigated in batch process. The investigation of various design parameters emphasis that utilization of copper as a low-cost cathode material in the galvanic couple, provides the best treatment and electrical production performances. Moreover, these performances are improved by increasing the surface area of the cathode. The present work reveals that the GF process has a potential to provide an electrical power density of about 200 W m−2. These interesting performances indicate that this novel Energy-from-Waste strategy of the GF process could serve as an ecological solution for wastewater treatment.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Novel Energy-from-Waste Approach for Electrical Energy Production by Galvano–Fenton Process

et al. 2021

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“…One of the key contributing factors to the corrosion resistance of Cu-Cr alloys is the homogeneity of the microstructure. The presence of phases with distinct electrochemical potentials can increase the risk of galvanic corrosion if they are electrically connected in a conductive environment [79]. For the Cu-Cr alloy, the Cu matrix acts as an anode, and the precipitates act as cathodes [61].…”

Section: Corrosion Behavior Of L-pbf-fabricated Cu-cr Alloysmentioning

confidence: 99%

Advancements in Additive Manufacturing for Copper-Based Alloys and Composites: A Comprehensive Review

Vahedi Nemani,

Ghaffari,

Sabet Bokati

et al. 2024

JMMP

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Copper-based materials have long been used for their outstanding thermal and electrical conductivities in various applications, such as heat exchangers, induction heat coils, cooling channels, radiators, and electronic connectors. The development of advanced copper alloys has broadened their utilization to include structural applications in harsh service conditions found in industries like oil and gas, marine, power plants, and water treatment, where good corrosion resistance and a combination of high strength, wear, and fatigue tolerance are critical. These advanced multi-component structures often have complex designs and intricate geometries, requiring extensive metallurgical processing routes and the joining of the individual components into a final structure. Additive manufacturing (AM) has revolutionized the way complex structures are designed and manufactured. It has reduced the processing steps, assemblies, and tooling while also eliminating the need for joining processes. However, the high thermal conductivity of copper and its high reflectivity to near-infrared radiation present challenges in the production of copper alloys using fusion-based AM processes, especially with Yb-fiber laser-based techniques. To overcome these difficulties, various solutions have been proposed, such as the use of high-power, low-wavelength laser sources, preheating the build chamber, employing low thermal conductivity building platforms, and adding alloying elements or composite particles to the feedstock material. This article systematically reviews different aspects of AM processing of common industrial copper alloys and composites, including copper-chrome, copper-nickel, tin-bronze, nickel-aluminum bronze, copper-carbon composites, copper-ceramic composites, and copper-metal composites. It focuses on the state-of-the-art AM techniques employed for processing different copper-based materials and the associated technological and metallurgical challenges, optimized processing variables, the impact of post-printing heat treatments, the resulting microstructural features, physical properties, mechanical performance, and corrosion response of the AM-fabricated parts. Where applicable, a comprehensive comparison of the results with those of their conventionally fabricated counterparts is provided.

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“…After this point, plateauing occurs, and anodic current density activity is seen to remain constant at ~0.15 Am -2 . It is believed that this is a result of the cathodic oxygen reduction reaction limiting the corrosion rate at the surface, this typically occurs when a corrosion product is present on the substrate's surface (170). In comparison, when the hydrophobic coating was applied to the HDG steel, little-tono anodic activity is observed between 1 and 18 hours of immersion.…”

Section: Physical Robustness Testsmentioning

confidence: 99%

The development of surface treatments on galvanised steel products for the automotive industry utilising a chemcoater

Williams

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There are many people I would like to make acknowledgements to, for their help and support throughout this engineering doctorate. Firstly, a special thank you to my academic supervisor Dr Eifion Jewell, a wealth of knowledge, you have always been on hand to share information and steer me in the right direction. Without your guidance, this project would have severely struggled to find a path, especially given the turbulent times of a pandemic and a late move to Asia. I am appreciative of all that you have done, Diolch yn fawr! A massive thank you to my industrial supervisor, Dr.Clive Challinor. You have always been approachable and happy to help wherever needed. You really made the link between academia and industry easy. Thank you for all your encouragement and support, despite our differences in opinion on our national rugby teams! Dr. Christian Griffiths (Chrisy), If I am honest, this entire project would not have been possible without your support. You have always been on hand to assist me wherever needed, sharing your knowledge and being instrumental in keeping the wheels turning on this rickety old bus, hey we even managed to enjoy a few beers on the way. Thanks mate and it's great to be able to call you a friend as well as a mentor now. My mucker (Dr.) Matthew Dodd (Doddsy), it's been a pleasure to graft alongside you mate, at many points we thought it might not happen, but our love of a good pint and continuous moan tenacity to get the job done has surely made it easier! Many others have always been on hand to help when needed. There are too many to list but a big thank you to Dr. Natalie Wint for sharing your expertise and always being there.Dr. Peter Greenwood and Professor Trystan Watson for starting my engineering doctorate journey and helping me establish myself in the early days. Uncle Leighton and the boys at PMRC for always providing a great working environment and helping to get the job done. Finally, a massive thank you to all my friends and family, especially Abbie and my parents who have supported and encouraged me from day one. Without you all, the road certainly would have been much rockier. Spot on.

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Galvanic Corrosion Testing

Cited by 7 publications

References 3 publications

A Novel Energy-from-Waste Approach for Electrical Energy Production by Galvano–Fenton Process

A Novel Energy-from-Waste Approach for Electrical Energy Production by Galvano–Fenton Process

Advancements in Additive Manufacturing for Copper-Based Alloys and Composites: A Comprehensive Review

The development of surface treatments on galvanised steel products for the automotive industry utilising a chemcoater

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