Relevant bibliographies by topics / Electropolishing

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Electropolishing'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 March 2025

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Journal articles on the topic "Electropolishing"

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Hensel, Kenneth B. "Electropolishing." Metal Finishing 98, no. 1 (January 2000): 440–48. http://dx.doi.org/10.1016/s0026-0576(00)80353-0.

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Hensel, Kenneth B. "Electropolishing." Metal Finishing 97, no. 1 (January 1999): 440–48. http://dx.doi.org/10.1016/s0026-0576(00)83104-9.

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Murphy, Michael. "Electropolishing." Metal Finishing 94, no. 2 (February 1996): 20. http://dx.doi.org/10.1016/s0026-0576(96)93835-0.

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Hensel, Kenneth B. "Electropolishing." Metal Finishing 99 (January 2001): 440–48. http://dx.doi.org/10.1016/s0026-0576(01)85304-6.

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Hensel, Kenneth B. "Electropolishing." Metal Finishing 100 (January 2002): 425–33. http://dx.doi.org/10.1016/s0026-0576(02)82046-3.

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Hensel, Kenneth B. "Electropolishing." Metal Finishing 97, no. 1 (January 1999): 447–55. http://dx.doi.org/10.1016/s0026-0576(99)80046-4.

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Sinkler, Wharton. "Electropolishing." Microscopy Today 4, no. 10 (December 1996): 16. http://dx.doi.org/10.1017/s155192950006332x.

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Jumer, John F. "Electropolishing." Metal Finishing 93, no. 1 (January 1995): 420–27. http://dx.doi.org/10.1016/0026-0576(95)93391-e.

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Murphy, Michael. "Electropolishing." Metal Finishing 93, no. 2 (February 1995): 30. http://dx.doi.org/10.1016/0026-0576(95)96056-2.

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Zhang, Linhui, and Binnian Zhong. "Electropolishing Behavior of 8xxx Al Alloy in Perchloric Acid and Ethanol Solution." Journal of Physics: Conference Series 2529, no. 1 (June 1, 2023): 012021. http://dx.doi.org/10.1088/1742-6596/2529/1/012021.

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Abstract The electropolishing characteristic curves of rolled 8079 Al alloy in perchloric acid and ethanol solution from -25 °C to 25 °C are obtained. The optimal electropolishing conditions of the 8079 Al alloy with rolled are investigated by optical microscope. The result shows that the lower the electropolishing temperature is, the longer the electropolishing time is, and the time range and voltage range are wider. Furthermore, the calibration rate of the phase after electropolishing is higher than 97% investigated by Electron Back-Scatter Diffraction. The electropolishing effect of both 8079 Al alloy with cast and 8011 Al alloy (cast and rolled) is verified.
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Dissertations / Theses on the topic "Electropolishing"

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Saleem, Saima. "Electropolishing in deep eutectic solvents." Thesis, University of Leicester, 2014. http://hdl.handle.net/2381/28577.

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A fundamental study of electropolishing of stainless steel and nickel based single crystal superalloy CMSX-4 in type III deep eutectic solvent based on choline chloride and hydrogen bond donor i.e. mixture of choline chloride with ethylene glycol in a 1:2 molar ratio was carried out and had been found to be competitive with the current concentrated mixture of inorganic acid electrolytes. Life cycle study was conducted to define the key process controlling factors like electrochemical stability, current efficiency, effect of history of electrolyte, recycling of ionic liquid and its reuse for electropolsihing. The electrochemical techniques like linear sweep anodizing curves, chronoamperometery and galvanostatic studies revealed that electropolishing in 1:2 ChCl:EG proceeded through the formation of viscous layer on the surface of the substrate similar to electropolishing in inorganic acid electrolytes. The optimization of electropolishing process was carried out using the experimental design strategies, Fractional Factorial Design (FFD) and found that electropolishing variables like addition of water, oxalic acid, electropolishing bath temperature, time and potential had positive impact on the surface finish. Surface texture measurements such as surface roughness and surface overlayer morphology of electropolished stainless steel and CMSX-4 was carried out using the microscopic techniques, atomic force microscopy (AFM), scanning electron microscopy (SEM), field emission scanning electron microscopy (FE-SEM) and digital holographic microscopy (DHM) and found to be the function of electropolishing time. Effect of electropolishing on corrosion behaviour of stainless steel was studied using the electrochemical techniques like open circuit potential measurements (OCP), potentiodynamic polarization curves and gravimeteric method showed improvement in the general or pitting corrosion of the workpiece. Nickel based superalloy was also successfully electropolished to remove the casting scales. The dissolution of two phases was found to be the function of electrochemical regime i.e. applied potential and current density.
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Chandra, Ashwini. "On the Mechanism of Niobium Electropolishing." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1330544777.

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Mousselli, Jad. "On surface electropolishing for the development of metallic stents." Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/36574.

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Les maladies cardiovasculaires sont responsables d'environ le tiers de tous les cas de décès au Canada. L'une des solutions utilisées pour résoudre ce problème consiste à utiliser un dispositif métallique constitué d'un maillage ayant une forme d’un filet et appelé stent. Les stents sont de petits dispositifs implantés dans des vaisseaux sanguins rétrécis pour rétablir la circulation sanguine et éviter une crise cardiaque ou un accident vasculaire cérébral et pour traiter les anévrismes du cerveau. Un contrôle précis de la surface de ces stents est nécessaire pour assurer la compatibilité de l'alliage choisi avec le milieu biologique dont il va être en contact avec. Les stents métalliques doivent satisfaire à des conditions précises définies en fonction de leur application finale. Ils doivent respecter des exigences strictes en termes de propriétés mécaniques, d'interaction électrochimique (corrosion) et de cytocompatibilité. Les alliages suivants sont traditionnellement utilisés dans les applications biomédicales et plus précisément pour les applications cardiovasculaires: l'alliage AISI316L est considéré comme une référence dans ce domaine, mais l'alliage L605, un alliage à base de Cobalt, prend de plus en plus d'importance grâce à ses propriétés mécaniques élevées (haute ductilité et haute résistance à la traction) et résistance élevée à la corrosion. L'utilisation d'alliages de titane est la nouvelle frontière pour les biomatériaux dans les applications cardiovasculaires, il est considéré comme un nouveau candidat potentiel pour les stents cardiovasculaires. Les alliages de titane présentent une combinaison unique de haute résistance et de grande ductilité (résistance à la traction et déformation uniforme supérieures à 1000 MPa et 30% respectivement). L’électropolissage est une étape de prétraitement appliquée à ces alliages métalliques pour obtenir des surfaces chimiquement homogènes, recouvertes d'une couche d'oxyde uniforme et amorphe, généralement de rugosité très lisse. Ce processus permet non seulement de contrôler les propriétés physiques de la surface, mais également celles chimiques. Le processus d'électropolissage comporte certaines variables, telles que le courant, la tension, la solution électrolytique et la température de l'électrolyte. En les contrôlant, il est possible de comprendre et d'améliorer les propriétés de la surface. Le but de ce projet est d’étudier les effets des différents variables d’électropolissage (courant, tension, solution électrolytique) sur les caractéristiques / propriétés de surface (morphologie, composition chimique et mouillabilité) des alliages utilisés pour la fabrication de stents.
Cardiovascular diseases (CVD) are responsible for about one-third of all death cases in Canada. One of the solutions used to solve this problem is using a metallic device made of a mesh and called a stent. Stents are small devices that are implanted in narrowed blood vessels to restore blood flow and to avoid a heart attack or stroke and to treat brain aneurysms. An accurate surface control is needed to assure the cytocompatibility of the chosen alloy with its biologic environment. Metallic stents must satisfy precise conditions defined according to their final application. They need to respect strict requirements, in terms of mechanical properties, electrochemical interaction (corrosion) and cytocompatibility. The following alloys are traditionally used in biomedical applications and more precisely for cardiovascular applications: the alloy AISI316L is considered a reference in this field, but the alloy L605, a Co-based material, is gaining more and more importance, due to its high mechanical properties (high ductility and high ultimate tensile strength) and high corrosion resistance. The use of Titanium alloys is the new frontier for biomaterials in cardiovascular applications, it is considered as a new potential candidate for cardiovascular stents. Titanium alloys, shows a unique combination of high strength and high ductility (ultimate tensile strength and uniform deformation higher than 1000 MPa and 30%, respectively). Electropolishing is a pre-treatment step applied to these alloys to obtain chemically homogeneous surfaces, covered with a uniform and amorphous oxide layer, generally with a very smooth roughness. This process not only makes it possible to control the physical properties of the surface, but also the chemical ones. The electropolishing process has some changeable variables, such as current, voltage, electrolytic solution and temperature of electrolyte. By controlling them, it is possible to understand and improve the surface properties. This work is aimed at studying the effects of electropolishing changeable variables (current, voltage, electrolytic solution) on surface characteristics/properties (morphology, chemical composition and wettability) of those alloys used for the manufacture of stents.
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Mendez, Julie Marie. "Characterization of Copper Electroplating and Electropolishing Processes for Semiconductor Interconnect Metallization." Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1244216625.

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Hung, Lie-chung. "Electropolishing of Ti-6A1-4V surgical implant alloy and its effect on corrosion behavior." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/20731.

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Zhao, Xin. "Electropolishing of Niobium in Sulfuric Acid-Methanol Electrolytes: Development of Hydrofluoric Acid-Free Electrolytes." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28507.

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Niobium (Nb) has the highest superconducting transition temperature (9.2 K) of the pure metals, which makes it the most used material for the construction of superconducting radio frequency (SRF) accelerators. The performance of the accelerator is critically dependent upon the quality of Nb surface. Electropolishing (EP) in hydrofluoric acid (HF)-containing electrolytes is the currently accepted treatment process. The presence of HF is necessary for the removal of the passive oxide surface film formed in aqueous electrolytes. But HF is hazardous and must be contained without human exposure and eliminated in an environmentally appropriate manner. In the present dissertation project, HF-Free EP of Nb was performed in sulfuric acid-methanol electrolytes. Sulfuric concentrations of 0.1 M, 0.5 M, 1 M, 2 M, and 3 M were used. Cyclic voltammetry and potential hold experiments were performed in cells of both two-electrode and three-electrode setups to evaluate the electrochemical process. The influence of electrolyte concentration, temperature, and EP duration was investigated. At room temperature, both the corrosion rate and the surface quality obtained were comparable to those currently obtained with HF-based processing. With decreasing temperature, the mean current level decreased and the surface quality improved substantially. For a desired average material removal of 100 μM, nanometer scale surface roughness was obtained under multiple conditions. Mechanism of EP was also investigated by electrochemical impedance spectroscopy (EIS). The EIS diagram indicates the presence of a compact film during EP at mass transport controlled limiting current and a film-free surface during EP at ohmic controlled current. Transfer from a film-free surface to an anodic film precipitation with decreasing temperature was also observed. Microsmoothing is only achieved under mass transport control. Nb⁵⁺ ions are determined to be the mass transport limiting species.
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Nathoo, Jeeten. "Optimisation of electrolyte composition and operating parameters for the electropolishing of 304 stainless steel." Master's thesis, University of Cape Town, 2003. http://hdl.handle.net/11427/5430.

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Haider, Waseem. "Enhanced Biocompatibility of NiTi (Nitinol) Via Surface Treatment and Alloying." FIU Digital Commons, 2010. http://digitalcommons.fiu.edu/etd/177.

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It is projected that by 2020, there will be 138 million Americans over 45, the age at which the increased incidence of heart diseases is documented. Many will require stents. This multi-billion dollar industry, with over 2 million patients worldwide, 15% of whom use Nitinol stents have experienced a decline in sales recently, due in part to thrombosis. It is a sudden blood clot that forms inside stents. As a result, the Food and Drug Administration and American Heart Association are calling for a new generation of stents, new designs and different alloys that are more adaptable to the arteries. The future of Nitinol therefore depends on a better understanding of the mechanisms by which Nitinol surfaces can be rendered stable and inert. In this investigation, binary and ternary Nitinol alloys were prepared and subjected to various surface treatments such as electropolishing (EP), magnetoelectropolishing (MEP) and water boiling & passivation (W&P). In vitro corrosion tests were conducted on Nitinol alloys in accordance with ASTM F 2129-08. The metal ions released into the electrolyte during corrosion tests were measured by Inductively Coupled Plasma Mass Spectroscopy (ICP-MS). Biocompatibility was assessed by observing the growth of human umbilical vein endothelial cells (HUVEC) on the surface of Nitinol alloys. Static and dynamic immersion tests were performed by immersing the Nitinol alloys in cell culture media and measuring the amount of metal ions released in solution. Sulforhodamine B (SRB) assays were performed to elucidate the effect of metal ions on the growth of HUVEC cells. The surfaces of the alloys were studied using Scanning Electron Microscopy (SEM) and X-ray Photoelectron Spectroscopy (XPS) respectively. Finally, wettability and surface energy were measured by Contact Angle Meter, whereas surface roughness was measured by Atomic Force Microscopy (AFM). All the surface treated alloys exhibited high resistance to corrosion when compared with untreated alloys. SRB assays revealed that Ni and Cu ions exhibited greater toxicity than Cr, Ta and Ti ions on HUVEC cells. EP and MEP alloys possessed relatively smooth surfaces and some were composed of nickel oxides instead of elemental nickel as determined by XPS. MEP exhibited lowest surface energy and lowest surface roughness.
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Rotty, Chloé. "Etude de l’électropolissage d’alliages horlogers issus de fabrication additive en milieu aqueux et solvant non-conventionnel." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD017/document.

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Ce travail de thèse s’inscrit dans lecadre du projet « MOMEQA » dont l’objectif est le soutien à l’innovation dans l’industrie horlogère en Franche-Comté. La première impression visuelle conditionne notre relation à l’objet, c’est pourquoi une finition soignée est primordiale. L’électropolissage est un procédéde dissolution électrochimique permettant der éduire la rugosité de surface d’un objet. La pièce traitée constitue l’anode dans une cellule d’électrolyse. La première partie de l’étude est consacrée aux laitons et à l’acier inoxydable 316 L. Une étude électrochimique préliminaire a permis de définir les conditions optimales d’électropolissage pour chaque matériau et milieu. La suite de l’étude a été dédiée à l’étude des comportements des aciers inoxydables 316L de fonderie comme de fabrication additive, afin de mettre en évidence l’influence du procédé de fabrication sur l’aptitude à l’électropolissage. Un dispositif spécialement conçu a également permis de faire varier les conditions hydrodynamiques et d’appliquer des ultrasons,en vue d’optimiser l’agitation. L’obtention d’une finition poli miroir sur des carrures de montres a validé la conception du pilote. Enfin, l’usage d’un électrolyte moins nocif que les mélanges d’acides, le Deep Eutectic Solvent constitué d’un mélange de chlorure de choline et d’éthylène glycol se montre prometteur. L’utilisation de ces olvant non-conventionnel permet d’utiliser des techniques d’analyses de surface impraticables in-situ en milieu très corrosif, tel que l’AFM. Finalement, un modèle décrivant les mécanismes d’électropolissage de l’acier inoxydable 316 L dans les deux milieux a été proposé, qui permet une bonne simulation des résultats de spectroscopie d’impédance électrochimique
This work is part of the project"MOMEQA" whose main purpose is to supportinnovation in watchmaking industry in Franche-Comté. For high-end pieces, the first visualimpression is crucial and that is why a neatfinishing is required. This is achieved byelectropolishing, which consists in anelectrochemical dissolution process that enablessurface roughness reduction. Although it ispresent in several applications, fundamentalmechanisms of electrochemical polishingremain poorly understood and tailoring theprocess to additive manufacturing parts is in itsearly stages. The first part of the study isdedicated to brass and 316L stainless steel.Basic electrolytic baths (H3PO4 for brasses anda H3PO4/ H2SO4 mixture for 316L stainlesssteel) are used as references. A preliminaryelectrochemical study allows the determinationof optimal electropolishing conditions for eachmaterial and medium. A special attention hasbeen paid to characterization methods, such asmicro-roughness, brightness, microstructure,texture and corrosion resistance. Subsequently,the study was restricted to both cast and additivemanufacturing 316L stainless steels, in order toidentify the influence of manufacturing processon the electropolishing ability. To meet theproject requirements, a pilot cell dedicated tolarge area parts was designed and built. The aimwas to study the scale-up as well as the effectsof workpieces shape. The outcome of this studywas the realization of a mirror finish on a watchdial, allowing validation of the pilot-cell design.The last part of our study consists in replicatingthe process in a less harmful electrolyte, a greensolvent (Deep Eutectic Solvent), made by amixture of choline chloride and ethylene glycol.This allows successful electropolishing,compatible with an industrial application.Moreover, it makes possible in-situ AFMmeasurements, impossible in highly corrosiveelectrolytes. Finally, a model forelectropolishing mechanism in the case of 316Lstainless steel was proposed for both media,allowing a good simulation of electrochemicalimpedance spectroscopy behaviour
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Čermák, Jan. "Návrh automatizovaného procesu elektrolytického leštění vzorků pro elektronový mikroskop." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444286.

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This diploma thesis deals with the automation of the electropolishing process, which is per-former as the last step in the preparation of metallographic samples intended for observation in an electron microscope. A complete hardware design of a single-purpose machine has been developed, which provides the automatic preperation of up to six samples per insertion. There was the design of a manipulator for sample handling together with chemically re-sistant sample holder suitable for automatic operation as a part of solution. The design of the whole machine was developed with regard to the safety of the operator. The thesis includes detailed 3D model of the device and the desing of an application for measurement in the LabVIEW. It describes the future working process of the machine, including a description of a software for controlling the machine and sending process data of each sample to the to the database in accordance with the principles of industry 4.0. In the conclusion, the achieved results and the proposal of further steps necessary for the realization of the machine are for-mulated.
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Books on the topic "Electropolishing"

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Center, Lewis Research, ed. Hot corrosion of single-crystal NiAl-X alloys. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.

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Center, Lewis Research, and United States. National Aeronautics and Space Administration., eds. Hot corrosion of single-crystal NiAl-X alloys. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.

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Center, Lewis Research, and United States. National Aeronautics and Space Administration., eds. Hot corrosion of single-crystal NiAl-X alloys. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.

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Center, Lewis Research, and United States. National Aeronautics and Space Administration., eds. Hot corrosion of single-crystal NiAl-X alloys. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, 1998.

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Riddell, Kevin Neil. A scanning probe microscopy study of electrode processes: The electrodeposition of nickel and the electropolishing of copper. Birmingham: University of Birmingham, 1996.

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Benavides, E., and M. Fajardo. Development Assessment of Two Decontamination Processes: Closed Electropolishing System for Decontamination of Underwater Surfaces. European Communities / Union (EUR-OP/OOPEC/OPOCE), 1992.

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Bullough, C. K., and J. K. Jenkins. A Jet-electropolishing Method for Optical Metallography and TEM Extraction Replica Preparation from Small Metal Samples. AEA Technology Plc, 1986.

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Book chapters on the topic "Electropolishing"

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Datta, Madhav. "Electropolishing in Practice." In Electrodissolution Processes, 251–70. First edition. | Boca Raton : CRC Press, 2021.: CRC Press, 2020. http://dx.doi.org/10.1201/9780367808594-11.

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Hryniewicz, T. "Kinetic Factors in Electropolishing." In Progress in Precision Engineering, 332–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84494-2_44.

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Yates, John T. "Fabrication of Metal Tips Using Zone Electropolishing." In Experimental Innovations in Surface Science, 250–53. New York, NY: Springer New York, 1998. http://dx.doi.org/10.1007/978-1-4612-2304-7_77.

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Datta, Madhav. "Anodic Dissolution of Metals in Electropolishing Electrolytes." In Electrodissolution Processes, 151–73. First edition. | Boca Raton : CRC Press, 2021.: CRC Press, 2020. http://dx.doi.org/10.1201/9780367808594-7.

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Kim, Seong-Hyun, Woong-Kirl Choi, Seung-Geon Choi, Eun-Sang Lee, and Chul-Hee Lee. "Study on Improving Surface Characteristics of Stainless Steel Alloys by Electropolishing." In PRICM, 2011–15. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118792148.ch249.

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Kim, Seong-Hyun, Woong-Kirl Choi, Seung-Geon Choi, Eun-Sang Lee, and Chul-Hee Lee. "Study on Improving Surface Characteristics of Stainless Steel Alloys by Electropolishing." In Proceedings of the 8th Pacific Rim International Congress on Advanced Materials and Processing, 2011–15. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-48764-9_249.

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Abbott, Andrew P., Katy J. McKenzie, and Karl S. Ryder. "Electropolishing and Electroplating of Metals Using Ionic Liquids Based on Choline Chloride." In ACS Symposium Series, 186–97. Washington, DC: American Chemical Society, 2007. http://dx.doi.org/10.1021/bk-2007-0975.ch013.

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Kumar, Abhinav, Manjesh Kumar, H. N. S. Yadav, and Manas Das. "COMSOL Simulation to Predict the Thickness of Material Removed from Surface During Electropolishing." In Advances in Modelling and Optimization of Manufacturing and Industrial Systems, 321–37. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6107-6_23.

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Sun, Xiaoyu, Xiuting Wei, Zhiyong Li, Deda Lou, Yongqi Wang, and Hanqing Liu. "Study on Improving the Performance of Nitinol Cardiovascular Stent by “Fiber Laser—Electropolishing”." In Mechanical Engineering and Materials, 31–40. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68303-0_3.

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Detriche, Simon, Jean-François Vanhumbeeck, Joseph Delhalle, and Zineb Mekhalif. "Electrochemical Impedance Spectroscopy as a Powerful Assessment Tool for the Electropolishing Quality of AISI 304 Stainless Steel." In Materials Research and Applications, 283–89. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-9223-2_16.

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Conference papers on the topic "Electropolishing"

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Eslami, Nadia, Zahra Chaghazari, Nanda Gopal Matavalam, Paul Carriere, and Rolf Wuthrich. "Electropolishing Additively Manufactured RF Components: An Investigation into Aluminum Texture and RF Losses." In 2024 Joint International Vacuum Electronics Conference and International Vacuum Electron Sources Conference (IVEC + IVESC), 1–2. IEEE, 2024. http://dx.doi.org/10.1109/ivecivesc60838.2024.10694966.

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Dillard, Joshua, Andrew Grizzle, Wondwosen Demisse, Pawan Tyagi, Lucas Rice, and Cordell Benton. "Effect of Altering the Sequence of Chempolishing and Electropolishing on Surface Properties of Additively Manufactured (AM) 316 Steel Components." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23878.

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Abstract The surface roughness of as produced additively manufactured (AM) components is very high and may lead to component failure and undesirable coefficients of friction. In rough surfaces, small cracks form at regions of high surface roughness acting as a stress raiser or crack nucleation sites. Likewise, rough surfaces impact both static and kinetic friction that can impede desired motion and oppose desired mechanical forces. For using these components in many applications, it is necessary to reduce surface deviations drastically during postprocessing. For parts with complex geometries and enormous internal surface areas, this reduction presents a complex engineering problem. We have explored chempolishing (C) and electropolishing (E) to reduce the external and internal surface roughness of stainless-steel components in our previous studies. Chempolishing is an electroless etching process that can uniformly smoothen the accessible surfaces of complex AM components. Electropolishing can produce an extremely smooth surface to sub-micrometer level roughness. Our prior work showed that chempolishing and electropolishing produced very distinct surface microstructures. It is quite possible that in future surface finishing, chempolishing and electropolishing may be applied on the same AM component to reduce the surface roughness of complex AM components. The resulting microstructure after the sequential application of chempolishing and electropolishing may be quite different as compared to that of after chempolishing or electropolishing alone. Here, we report the application of altering the sequence of chempolishing and electropolishing to reduce the external and internal surface roughness of 316 steel components. It is unknown what will be the impact of manipulating the sequence of electropolishing and chemical polishing on surface roughness and microstructure of AM materials. This paper focuses on the post-process sequencing of chempolishing, followed by electropolishing (CE) and vice versa (EC). We found chempolishing followed by electropolishing reduced internal surface roughness by as much as 12 micrometers. Whereas the electropolishing followed by chempolishing reduced external surface roughness by an average of ∼15 micrometers. The structure and properties of the surface finished pieces were examined using: Scanning Electron Microscopy (SEM), Surface Profilometry, and Water Contact Angle Measurement. SEM provided direct insight that CE and EC process produced significantly different microstructures from each other and also from chempolished and electropolished processes. Water contact angle measurements performed on CE, and EC treated AM samples showed that surface energy was quite different. Hence, CE and EC are expected to perform quite differently under a corrosive environment and also yield various adhesion quality for the protective coatings. Confirmation of structural changes provided in this experiment shed light on the capabilities of postprocessing improvements we can make to materials performance.
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Chouhan, Vijay. "Recent Advances in Electropolishing at Fermilab." In Recent Advances in Electropolishing at Fermilab. US DOE, 2024. http://dx.doi.org/10.2172/2427363.

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Selvaduray, Guna, and Steve Trigwell. "Effect of Surface Treatment on Surface Characteristics and Biocompatibility of AISI 316L Stainless Steel." In ASME 2006 Frontiers in Biomedical Devices Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/nanobio2006-18031.

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Surface characteristics are essential in determining the biocompatibility of medical implants. Surface treatments such as mechanical polishing, electropolishing, passivation and plastic strain of AISI 316L stainless steel was found to affect the critical surface tension, with the combined electropolishing and passivation treatment resulting in the most desirable critical surface tension for biocompatibility. AES and XPS analysis showed that electropolishing results in changing the surface chemical composition significantly. There is significant Cr enrichment on the surface, compared to the bulk. The surface Cr and Fe exist as a combination of oxides and hydroxides.
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Brent, Denikka, Tyler Alyssa Saunders, Francisco Garcia Moreno, and Pawan Tyagi. "Taguchi Design of Experiment for the Optimization of Electrochemical Polishing of Metal Additive Manufacturing Components." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-67492.

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3D Printing (Additive Manufacturing, AM) offers benefits such as lower costs, easier customization and creating complex functional products. However, utilization of AM components in the engineering applications may be severely limited by the high surface roughness. For most industrial uses the high surface roughness can cause stress concentrations, premature failure, and corrosion susceptibility. Unfortunately, conventional surface reduction processes like machining, extrude honing, and sandblasting, may not be feasible for the complex AM components. This research focused on exploring electropolishing as a viable surface smoothing approach for the AM components. However, electropolishing is a multivariable process and requires extensive parameter optimization. We have employed Taguchi’s design of experiment to find the suitable combination of electropolishing parameters. Our Taguchi analysis yielded a set of optimum experimental parameters for the electropolishing of steel AM components. This experimental process reduced the roughness of AM component surfaces as much as ∼63%.
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Inman, Maria, Timothy Hall, Holly Garich, and E. Jennings Taylor. "Environmentally Benign Electropolishing of Biomedical Alloys." In ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/msec2014-4035.

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A process for surface finishing of medical device and implant alloys is described. Unlike conventional electrochemical surface finishing processes, Faraday’s pulse reverse process does not require low conductivity/high viscosity electrolytes and does not require the addition of aggressive chemicals such as hydrofluoric acid to remove the passive film associated with electropolishing of passive and strongly passive materials. This paper focuses on pulse/pulse reverse electropolishing of Nitinol and other metals and alloys containing titanium, molybdenum and niobium.
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Higuchi, T. "Hydrogen Absorption in Electropolishing of Niobium." In HYDROGEN IN MATERIALS & VACUUM SYSTEMS: First International Workshop on Hydrogen in Materials and Vacuum Systems. AIP, 2003. http://dx.doi.org/10.1063/1.1597369.

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Tyagi, Pawan, Tobias Goulet, Denikka Brent, Kate Klein, and Francisco Garcia-Moreno. "Scanning Electron Microscopy and Optical Profilometry of Electropolished Additively Manufactured 316 Steel Components." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-88339.

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Additive manufacturing (AM) can produce highly complex engineering components that are either extremely challenging for the conventional subtractive manufacturing route or not possible otherwise. High surface roughness can make an AM component highly vulnerable to premature failure during fatigue loading. Post-processing aiming to reduce surface roughness is essential to make as produced AM parts functional. We have explored electropolishing route to achieve optimum surface roughness and surface chemistry. We have performed electropolishing treatment on the steel AM parts around 70 °C in an electrolyte comprising the phosphoric acid and sulfuric acid. Profilometry and scanning electron microscopy were performed to study the electropolished and unpolished areas. Optical profilometry study showed that one needs to remove nearly ∼200 μm material from the surface to achieve very smooth surface. Electropolishing was effective in reducing the surface Ra roughness from ∼2 μm rms to ∼0.07 μm rms. Such low rms roughness makes an AM component suitable for almost every engineering application for which a smooth surface is required. Scanning electron microscopy revealed that electropolished area on AM component possessed distinctively different microstructure as compared to the untreated surface of an AM component. We also conducted the compositional analysis of the electropolished area to investigate the possibility of residual contamination from the electropolishing process. Our study revealed that electropolishing is a highly promising route for improving the surface finishing of AM components.
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Chouhan, V. "Electropolishing study on nitrogen-doped niobium surface." In Electropolishing study on nitrogen-doped niobium surface. US DOE, 2023. http://dx.doi.org/10.2172/1993460.

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Morgan, A. V., A. Romanenko, and A. Windsor. "Surface studies of contaminants generated during electropolishing." In 2007 IEEE Particle Accelerator Conference (PAC). IEEE, 2007. http://dx.doi.org/10.1109/pac.2007.4441245.

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Reports on the topic "Electropolishing"

1

Schulze, Roland K. A short tutorial on uranium electropolishing. Office of Scientific and Technical Information (OSTI), April 2020. http://dx.doi.org/10.2172/1615644.

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Shimskey, Rick, Kirsten Adams, Zachary Huber, Scott Swenson, and Kriston Brooks. Electropolishing of a Full-Sized U-10Mo Plate. Office of Scientific and Technical Information (OSTI), December 2022. http://dx.doi.org/10.2172/2345785.

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Kelley, Michael J. Research and development for electropolishing of Nb for ILC accelerator cavities. Office of Scientific and Technical Information (OSTI), September 2009. http://dx.doi.org/10.2172/964286.

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