Relevant bibliographies by topics / Electrolytic polishing

Contents

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

Academic literature on the topic 'Electrolytic polishing'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 February 2022

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Journal articles on the topic "Electrolytic polishing"

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Aliakseyeu, Yu G., A. Yu Korolyov, V. S. Niss, A. E. Parshuto, and A. S. Budnitskiy. "ELECTROLYTE-PLASMA POLISHING OF TITANIUM AND NIOBIUM ALLOYS." Science & Technique 17, no. 3 (May 31, 2018): 211–19. http://dx.doi.org/10.21122/2227-1031-2018-17-3-211-219.

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Titanium and niobium alloys are widely used at present in aircraft, nuclear energy, microwave technology, space and ultrasonic technology, as well as in manufacture of medical products. In most cases production technology of such products involves an implementation of a quality polishing surface. Mechanical and electrochemical methods are conventionally used for polishing products made of titanium and niobium alloys. Disadvantages of mechanical methods are low productivity, susceptibility to introduction of foreign particles, difficulties in processing complex geometric shapes. These materials are hard-to-machine for electrochemical technologies and processes of their polishing require the use of toxic electrolytes. Traditionally, electrochemical polishing of titanium and niobium alloys is carried out in acid electrolytes consisting of toxic hydrofluoric (20–25 %), sulfuric nitric and perchloric acids. The disadvantage of such solutions is their high aggressiveness and harmful effects for production personnel and environment. This paper proposes to use fundamentally new developed modes of electrolytic-plasma treatment for electrolyte-plasma polishing and cleaning products of titanium and niobium alloys while using simple electrolyte composition based on an aqueous ammonium fluoride solution providing a significant increase in surface quality that ensures high reflectivity. Due to the use of aqueous electrolyte the technology has a high ecological safety in comparison with traditional electrochemical polishing. The paper presents results of the study pertaining to the effect of titanium and niobium electrolytic-plasma polishing characteristics using the developed mode for productivity, processing efficiency, surface quality, and structure and properties of the surface to be treated. Based on the obtained results, processes of electrolytic-plasma polishing of a number of products made of titanium alloys BT6 (Grade 5), used in medicine and aircraft construction, have been worked out in the paper.
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Chandler, Wayne. "Electrolytic Polishing of Aluminum." Metal Finishing 104, no. 10 (October 2006): 25–27. http://dx.doi.org/10.1016/s0026-0576(06)80318-1.

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Aliakseyeu, Yu G., A. Yu Korolyov, and V. S. Niss. "Electrolytic-plasma polishing of cobalt-chromium alloys for medical products." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 64, no. 3 (October 6, 2019): 296–303. http://dx.doi.org/10.29235/1561-8358-2019-64-3-296-303.

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In the manufacture of implants that are subject to increased cyclic loads, cobalt-chromium alloys with high hardness- and wear resistance have recently been widely used. Roughness of working surfaces is one of the most important characteristics of such products. The traditional processes of finishing the surface of cobalt-chromium alloy implants are based on mechanical and electrochemical methods. The disadvantages of mechanical methods are low productivity, susceptibility to the introduction of foreign particles, difficulties in processing of complex geometric shapes. For electrochemical technologies the treated materials are considered intractable, harmful electrolytes, consisting of solutions of acids, are used in the process of polishing. As an alternative to existing methods, it was proposed to use an environmentally safe method of electrolytic-plasma polishing, the main advantage of which is the use of aqueous solutions of salts with a concentration of 3–5 % as electrolytes. According to the results of the technological process, it has been established that at most electrolyte-plasma polishing modes of cobalt-chromium alloys for medical purposes, a relief in the form of a grid of protrusions occurs on the surface, the origin of which can be explained by the heterogeneity of the material structure that occurs at the stage of casting. Moreover, the height of the formed relief protrusions has a direct impact on the amount of surface roughness. As a result of studies, electrolyte-plasma polishing process modes were established, ensuring the formation of a smooth surface without the presence of embossed protrusions, smoothing the microrelief with the removal of scratches resulting from pre-grinding, achieving a low roughness value (Ra 0.057 micron) and a high reflection coefficient (0.7), which fully meets the requirements for the surface of the implants.
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Zhenlong, Wang, Luan Yingyan, Pang Tao, and Liu Weidong. "Elastic and electrolytic ultraprecision polishing." Metal Finishing 96, no. 7 (July 1998): 22–24. http://dx.doi.org/10.1016/s0026-0576(98)80041-x.

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Babilas, Dorota, Joanna Michalska, Elżbieta Pamuła, and Wojciech Simka. "Influence of Electrolytic Polishing and Anodic Passivation on Corrosion Resistance of Ti-15Mo Alloy." Solid State Phenomena 227 (January 2015): 499–502. http://dx.doi.org/10.4028/www.scientific.net/ssp.227.499.

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This paper presents the results of investigations on electrolytic polishing and anodic passivation of Ti-15Mo alloy. The influence of chemical composition of the bath used in electrolytic polishing and anodic passivation process on the morphology, wettability and corrosion resistance of the electrochemically modified vanadium-free Ti-15Mo alloy was presented. The electropolishing process was carried out in a solution containing: sulphuric acid, ethylene glycol, ammonium fluoride and oxalic acid. Moreover, the anodic oxidation process was carried out in a 1.0 M H2SO4, 1.0 M H3PO4and 0.5 M solution of K2SiO3and 5 g/dm3KOH. It was found that the electrolytic polishing and anodic passivation led to significant improvement of the surface morphology. The electrolytic polishing and anodic passivation of Ti-15Mo improved corrosion resistance of the alloy in contact with of Ringer's physiological solution. The samples anodised at 100 V in 1.0 M H3PO4presented the highest corrosion resistance.
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FUJINO, Tsuyoshi, Yoshiaki IDA, Kiyotaka ISHIMI, and KITAJIMA Koichi. "Deburring Prcessing Technology by Electrolytic Polishing." Proceedings of Mechanical Engineering Congress, Japan 2018 (2018): S1330002. http://dx.doi.org/10.1299/jsmemecj.2018.s1330002.

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Rokosz, Krzysztof, and Marcin Kułakowski. "Electrochemical polishing of selected stainless steels." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 6 (September 8, 2018): 682–85. http://dx.doi.org/10.24136/atest.2018.156.

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The AISI 316Ti (EN 1.4571) austenitic stainless steel sample (50 × 30 × 1,5 mm) was used for the study. The main elements forming the steel are: chromium (16-18%), molybdenum (2.0-3.0%), nickel (10.0-14.0%), titanium (max 0.7%), and iron as the rest of the steel composition. The electrolytic polishing operations were performed at the current density of 50 A/dm2. The main elements of the electropolishing setup were a processing cell, a DC power supply RNG-3010, the electrodes and connecting wiring. The studies were carried out in the electrolyte of initial temperature of 50±5 °C. For the studies, as the electrolyte a mixture of two acids, i.e. H3PO4:H2SO4 equal to 60%:40%, was used. For surface characterization the 3D roughness parameters(Sa=0.744 μm, Sq=0.984; Sp=2.32, Sv=3.5, St=5.88; Ssk=–0.898; Sku=2.97) regarding ISO25178 were used.
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Böttger-Hiller, Falko, Klaus Nestler, Henning Zeidler, Gunther Glowa, and Thomas Lampke. "Plasma electrolytic polishing of metalized carbon fibers." AIMS Materials Science 3, no. 1 (2016): 260–69. http://dx.doi.org/10.3934/matersci.2016.1.260.

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Cornelsen, Matthias, Carolin Deutsch, and Hermann Seitz. "Electrolytic Plasma Polishing of Pipe Inner Surfaces." Metals 8, no. 1 (December 29, 2017): 12. http://dx.doi.org/10.3390/met8010012.

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Kusmanov, Sergei A., Vasiliy Belkin, and Irina Kusmanova. "Surface Modification of Steel by Anodic Plasma Electrolytic Boronitriding and Polishing." Materials Science Forum 972 (October 2019): 229–34. http://dx.doi.org/10.4028/www.scientific.net/msf.972.229.

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The paper shows the possibility of plasma electrolytic polishing of the steel surface after its chemical-thermal treatment. Positive results of the plasma electrolytic polishing are obtained for low carbon steel after its anodic plasma electrolytic boronitriding. An X-ray diffractometer and a scanning electron microscopy were used to characterize the phase composition of the modified layer and its surface morphology. Surface roughness was studied with the use of a roughness tester. The hardness of the treated and untreated samples was measured using a microhardness tester. Corrosion properties of the samples treated surfaces were evaluated using potentiodynamic polarisation tests in solution of sodium chloride. The reduction of the surface roughness of 1.7 times and the corrosion current density of 1.5 times of boronitrided steel by plasma polishing using mode of current interruption for 2 min without changing the structure of the diffusion layers is shows.
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Dissertations / Theses on the topic "Electrolytic polishing"

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Hight, J. Robert. "Interfacial fluid pressure and pad viscoelasticity during chemical meachanical polishing." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/16715.

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Huo, Jinshan. "Electrochemical planarization of copper for microelectronic applications /." Full text open access at:, 2004. http://content.ohsu.edu/u?/etd,112.

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Rajput, Ajeet Singh, Henning Zeidler, and Andreas Schubert. "Analysis of voltage and current during the Plasma electrolytic Polishing of stainless steel." Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-227115.

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Plasma electrolytic Polishing (PeP) is a non-conventional technology for the surface treatment of electrically conductive materials. It is an effective machining technique for cleaning and polishing of metals and considered as a more environmentally friendly alternative to the electropolishing process. The electropolishing process uses aggressive media such as acids, whereas in PeP, acids or toxicants are replaced by low concentrated water solutions of various salts. In PeP, high DC voltage is applied to the electrodes in the aqueous electrolyte solution, which establishes a thin steam-gas layer around the surface of the work piece resulting in the generation of plasma. From the previous research, it is found that the formation of stable plasma generally takes place between 180-370 volts, where it results in better surface conditions. The aim of this study is to analyse the behaviour of current according to different voltages and their effects on surface roughness and material removal rate (MRR) of stainless steel in Plasma electrolytic Polishing process.
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Arrowsmith, D. J. "Electrolytic processes on surfaces : contributions to eletrolytic polishing, anodising, adhesion, colour, lithography and electronic applications." Thesis, Aston University, 1988. http://publications.aston.ac.uk/21378/.

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Han, Peidong. "A Study on Electrolytic In-Process Dressing (ELID) Grinding of Sapphire with Acoustic Emission Monitoring." Connect to full text in OhioLINK ETD Center, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1240841098.

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Thesis (M.S.)--University of Toledo, 2009.
Typescript. "Submitted as partial fulfillments of the requirements for The Master of Science Degree in Mechanical Engineering." "A thesis entitled"--at head of title. Bibliography: leaves 104-110.
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LIN, CHIN-YI, and 林晋毅. "Magnetic Field Effects on Copper Electrolytic Polishing." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/825gkb.

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碩士
明志科技大學
化學工程系碩士班
102
In this study, we focused on polishing technology via electrochemical reaction and magnetic field. The two-electrode cell with phosphoric acid was used to investigate the effect of applied electrical and magnetic fields on copper polishing. Then AFM and electrochemical impedance spectroscopy (EIS) were utilized to discuss the surface roughness and reaction mechanism. As a result, applying magnetic field could improve the cooper planarization effectively. Especially when the current density was perpendicular to the magnetic field, Lorentz force and additional convection could assist the mass transfer near the electrode surface or the departure of bubble on the electrode surface. The experimental results show that the best planarization occurred at 0.9 T magnetic field with 270° to the current density. However, increasing magnetic field at high voltage will produce more oxygen and pits on surface. The EIS results show that a large magnetic field caused a narrow passive layer, proving that applying magnetic field can enhance mass transfer.
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Yeh, Chieh-Yuan, and 葉介元. "Design and Testing of the Electrolytic Polishing Machine." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/39249136540448844187.

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碩士
逢甲大學
紡織工程所
94
The electrolytic polishing is operated in the specific electrolyte bath with appropriate direct current source on the both sides of electrodes to generate the electrolytic effect and polish the surface roughness of workpiece. In the electrolyte bath, the micro-protrusion part of workpiece can be removed and polished due to the electron discharge of electric field so as to decrease the roughness of workpiece. The aim of this study is to design an electrolytic polishing machine and prove the performance of it. The test was proceeded with a 316L stainless steel as workpiece and discussed the impact factors of electrolytic concentration, rotational speed of the electrode and electrolytic time on the roughness and light reflection of it. It is proved that the operated conditions for an optimal roughness of workpiece are as follows: the electrolytic concentration is 30 wt%, the rotational speed of the electrode is 350 r.p.m, and electrolytic time is 30 minutes under the constant electric current of 0.95 A.
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Chen, Jin-Qian, and 陳晉虔. "Studies on Electrolytic Composite Abrasive Polishing of Cylindrical Surface Using Conductive Polymer Tool with Self-electrolytic Dressing." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/2a373p.

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碩士
國立中山大學
機械與機電工程學系研究所
107
When the round rod workpiece of SUS 304 stainless steel is polished, it causes problems with residual microchips of metal on the tool surface. In order to solve these problems, composite electrolytic abrasive polishing machine with self-electrolytic dressing is designed and fabricated. Effects of load (0.05 N~0.25 N), abrasive particle size (1~3 μm), current (0~300 mA), NaNO3 electrolyte concentration (0~40 wt.%), dressing current (0~600 mA) and processing time (0~10 min) on the surface roughness of workpiece are investigated. In the electrolytic dressing experiments, change rate of resistance between the conductive polymer tool electrode and dressing electrode increases with increasing dressing current. This indicates that the microchips of metal remained on the surface of the tool electrode is rapidly dissociated by electrolysis, and returns to the clean surface of tool electrode. In the composite electrolytic abrasive polishing with electrolytic dressing process, the best experimental conditions are load of 0.25 N, abrasive particle size of 3 μm, current of 150 mA, NaNO3 electrolyte concentration of 20 wt.%, dressing current of 300 mA and processing for 8 minutes, the workpiece surface roughness Rmax can decrease from 0.63 μm to 0.149 μm and Ra from 0.16 μm to 0.039 μm. Finally, the entire round rod workpiece of SUS 304 stainless steel is processed by composite electrolytic abrasive polishing at the feed rate 3 mm/min of tool electrode for 3 cycles under the optimal experimental conditions mentioned above. Results show that the workpiece surface roughness Rmax can decrease from 0.63 μm to 0.158 μm and Ra from 0.16 μm to 0.041 μm. By continuing to process the second workpiece with the same parameters, the workpiece surface roughness Rmax can decrease from 0.63 μm to 0.176 μm and Ra from 0.16 μm to 0.045 μm. All results are mirror-grade surfaces.
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HSIEH, CHIA-HSIU, and 謝嘉修. "Study of Oxide Layer Removal form Hand Tool Steels Using Electrolytic Plasma Polishing." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/vew2m4.

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碩士
國立雲林科技大學
機械工程系
107
This study uses 50BV30 hand tools with chromium boron vanadium alloy steel, was used to high temperature oxidation experiment, oxidation temperature is set at 600 ° C, apply 10 hours, 20 hours, 50 hours, 100 hours of oxidation time respectively, observe the thickness, structure, and type of product formed by the oxide layer of the test piece, and the difference in surface roughness before and after oxidation. Electrolyte plasma polishing technology for oxide removal, since the chromium boron vanadium alloy steel is oxidized at 600 ° C for 100 hours, an oxide layer having a thickness of about 90 μm is formed. after 300 seconds of electrolyte polishing, the oxide cannot be completely removed. but after the electrolyte polishing effect, The porous interior of the oxide is formed into a porous structure.
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Zhong, Deng-Kai, and 鍾登凱. "A study on effect of electrolytic composite polishing on stainless steel using by bamboo carbon." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/85129920882624785786.

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碩士
國立中央大學
機械工程學系
102
This research is focus on electrolytic composite polishing combining with electro-polishing and mechanical polishing to optimize the surface roughness of stainless steel and the wear rate of bamboo carbon electrode. Bamboo carbons’ microstructure are comparatively porous and dense, its micro-pores possess high adsorption capacity. In this article, we expect bamboo carbon could enhance the additional values by combing with existing industrial technologies. The electrolytic composite polishing in this article are experimented with the parameters of machining time, abrasive, increasing load, concentration of abrasive, polishing plate speed, electrode speed and voltage of electrolytic composite polishing. And the roughness of stainless steel, the wear rate of bamboo carbon electrode and the surface morphology of the results are investigated and analyzed.
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Books on the topic "Electrolytic polishing"

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Dettner, Paul. Electrolytic and chemical polishing of metals. Holon, Israel: Ordentlich, 1987.

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Grilikhes, S. I͡A. Ėlektrokhimicheskoe i khimicheskoe polirovanie: Teorii͡a i praktika : vlii͡anie na svoĭstva metallov. 2nd ed. Leningrad: "Mashinostroenie," Leningradskoe otd-nie, 1987.

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Buhlert, Magnus. Elektropolieren: Elektrolytisches Glänzen, Glätten und Entgraten von Edelstahl, Stahl, Messing, Kupfer, Aluminium und Titan. Bad Saulgau: E. Leuze, 2009.

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Chemical-Mechanical, Polishing 2000 (2000 San Francisco Calif ). Chemical-Mechanical Polishing 2000: Fundamentals and materials issues : symposium held April 26-27, 2000, San Francisco, California, U.S.A. Warrendale, Pa: Materials Research Society, 2001.

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Electrolytic in-process dressing (ELID) techologies: Fundamentals and applications. Boca Raton, FL: Taylor & Francis, 2011.

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Arrowsmith, David John. Electrolytic processes on surfaces: Contributions to electrolytic polishing, anodizing, adhesion, colar, lithography and electronic applications. Birmingham: Aston University. Department of Mechanical and Production Engineering, 1988.

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Advances in CMP/polishing technologies for the manufacture of electronic devices. Oxford: Elsevier, 2012.

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Krishnan, M., S. V. Babu, S. Danyluk, and M. Tsujimura. Chemical-Mechanical Polishing - Fundamentals and Challenges. University of Cambridge ESOL Examinations, 2014.

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Meuris, Marc, Rajiv K. Singh, Rajeev Bajaj, and Mansour Moinpour. Chemical-Mechanical Polishing 2000: Fundamentals and Materials Issues. University of Cambridge ESOL Examinations, 2014.

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Babu, Suryadevara V., Kenneth C. Cadien, and Hiroyuki Yano. Chemical-Mechanical Polishing 2001 - Advances and Future Challenges. University of Cambridge ESOL Examinations, 2014.

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Book chapters on the topic "Electrolytic polishing"

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Radkevich, Mihail Mihailovich, and Ivan Sergeevich Kuzmichev. "Technological Schemes for Elongated Foramen Internal Surface Finishing by Forced Electrolytic-Plasma Polishing." In Advances in Mechanical Engineering, 102–11. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-62062-2_11.

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Danilov, I., S. Quitzke, A. Martin, P. Steinert, M. Zinecker, and A. Schubert. "Influence of Plasma Electrolytic Polishing on Surface Roughness of Steel, Aluminum and Cemented Carbide." In Lecture Notes in Production Engineering, 265–73. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78424-9_30.

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Zakharov, Sergey V., and Mikhail T. Korotkikh. "Electrolyte-Plasma Polishing Ionization Model." In Advances in Mechanical Engineering, 193–208. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-39500-1_20.

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GABE, D. R. "Chemical and Electrolytic Polishing." In Corrosion, 11:24–11:39. Elsevier, 1994. http://dx.doi.org/10.1016/b978-0-08-052351-4.50091-1.

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"Chemical and Electrolytic Polishing." In Metallography and Microstructures, 281–93. ASM International, 2004. http://dx.doi.org/10.31399/asm.hb.v09.a0003748.

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Marinescu, Ioan D., W. Brian Rowe, Boris Dimitrov, and Hitoshi Ohmori. "Electrolytic in-process dressing grinding and polishing." In Tribology of Abrasive Machining Processes, 363–98. Elsevier, 2013. http://dx.doi.org/10.1016/b978-1-4377-3467-6.00012-4.

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Marinescu, Ioan D., W. Brian Rowe, Boris Dimitrov, and Ichiro Inasaki. "Electrolytic In-process Dressing (ELID) Grinding and Polishing." In Tribology of Abrasive Machining Processes, 297–342. Elsevier, 2004. http://dx.doi.org/10.1016/b978-081551490-9.50010-4.

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Conference papers on the topic "Electrolytic polishing"

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Li Yugiong, Yu Zhinong, Xue Wei, and Leng Jian. "The electrolytic polishing of flexible display steel substrate." In 2007 Asia Optical Fiber Communication and Optoelectronics Conference. IEEE, 2007. http://dx.doi.org/10.1109/aoe.2007.4410732.

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Henning, Zeidler, and Böttger-Hiller Falko. "Surface Finish of Additively Manufactured Parts using Plasma Electrolytic Polishing." In WCMNM 2018 World Congress on Micro and Nano Manufacturing. Singapore: Research Publishing Services, 2018. http://dx.doi.org/10.3850/978-981-11-2728-1_42.

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Li, Yuqiong, Zhi-nong Yu, Wei Xue, and Jian Leng. "The electrolytic polishing study of the stainless steel foil (SUS 304)." In International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, edited by Liwei Zhou. SPIE, 2007. http://dx.doi.org/10.1117/12.790925.

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"Residual Stress Redistribution due to Removal of Material Layers by Electrolytic Polishing." In Residual Stresses 10. Materials Research Forum LLC, 2016. http://dx.doi.org/10.21741/9781945291173-100.

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Reinhardt, Felix, Falko Böttger-Hiller, Christian Kranhold, Hans-Peter Schulze, Oliver Kröning, Henning Zeidler, and Thomas Lampke. "Surface modification for corrosion resistance of electric conductive metal surfaces with plasma electrolytic polishing." In PROCEEDINGS OF THE 22ND INTERNATIONAL ESAFORM CONFERENCE ON MATERIAL FORMING: ESAFORM 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112652.

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Lee, Shuo-Jen, and Jian-Jang Lai. "Evaluation of Electrode Agitation Effects on Electropolishing Process." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60152.

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Electropolishing(EP) is a surface treatment process which improves the surface roughness and enhances the surface quality by electrochemical reactions. The system is composed of an anode, a cathode, a power supply and viscous electrolyte. From the electrochemical reactions, the anodic metallic dissolution will leave off the surface and formed a viscous layer to enhance the surface quality, especially in stainless steels. It improves for the chrome to iron ratio and reduces the surface activity to avoid the surface corrosion from environment. From the anodic dissolution, the water may also be electrolyzed to form the hydrogen and oxygen bubbles on the anode and cathode plates. The viscous electrolyte causes the bubbles hard to escape from the gap between electrodes resulting ineffective natural convection and no idea about where and when of the viscous layer would be destroyed. So it is hard to predict the EP effects under natural convection during the EP process. It decreases the process stability as well as specimen surface quality. In this study, two methods of electrolyte agitation were employed to study their effects on electropolishing. The first method was by mechanical electrode movement. The second method was by ultrasonic agitation. The forced convection, generated by electrode movement and ultrasound, will accelerate the speed of bubbles leaving, breaking up from the surface and refreshing the electrolyte between electrodes. Thus, it may accomplish the goal of maintaining the stability of reaction environment during the EP process. The materials of both anode and cathode were SS316L stainless steel. The compositions and temperature of the electrolyte remained the same in each experiment. The control variables of experiments were electrode gap, rotational speed, amplitude of electrode movement and polishing time in mechanical agitation experiments. Frequency and amplitude of ultrasound were the control variables in the ultrasound experiment. The surface quality indicators were surface roughness and qualitative microscopic evaluation of surface morphology. According to the variations of surface quality indicators, the parametric effects on EP process will be analyzed. And the effectiveness of electrolytic agitation method on the surface quality and process stability were evaluated.
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Wang, Ji, Xue-mei Zong, Jian-fei Liu, and Sen Feng. "Influence of Voltage on Electrolysis and Plasma Polishing." In 2017 International Conference on Manufacturing Engineering and Intelligent Materials (ICMEIM 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/icmeim-17.2017.3.

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Wang, Ji, Laichun Suo, Yili Fu, and Lili Guan. "Study on material removal rate of electrolysis and plasma polishing." In 2012 International Conference on Information and Automation (ICIA). IEEE, 2012. http://dx.doi.org/10.1109/icinfa.2012.6246913.

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Nagayama, Gyoko, Ryuji Ando, Kei Muramatsu, and Takaharu Tsuruta. "Fabrication of Macroporous on No-Mask Silicon Substrate for Application to Microsystems." In 2008 Second International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2008. http://dx.doi.org/10.1115/micronano2008-70323.

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We applied the anodic etching (i. e. photo assisted electrochemical etching) to the n type silicon substrate of orientation (100) without masking to fabricate macropores penetrated Si substrate. The anodic etching conditions of the macroporous formation were discussed and the effects of the resistivity, voltage, current density, electrolyte concentration and illumination etc. on the pore size and the porosity were investigated. The pores in high aspect ratio through the cross section of the silicon wafer were obtained with polishing and RIE (reactive ion etching) from the back side. It is found that the pore size at the back side is about 1.5 to 2 times larger than that of the front side. Also, as one example of the applications of porous silicon to microsystems, we demonstrate the results obtained in a micro fuel cell system using a porous silicon membrane (PSM). The PSM was fabricated by a porous silicon wafer which was filled with Nafion dispersion solution with ultrasonic vibrations. It was used as a proton conduction membrane by assembling into the H2 / air feed fuel cell at ambient conditions using conventional electrodes. We found that the Nafion filled PSM worked well and a maximum power density of 89.2 mW/cm2 were achieved under the flow rate of 100ml/min for H2 and 200ml/min for air.
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10

Real, Daniel, and Nico Hotz. "Novel Non-Concentrated Solar Collector for Solar-Powered Chemical Reactions." In ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/es2013-18382.

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The purpose of this study is the proof that non-concentrating solar-thermal collectors can supply the thermal energy needed to power endothermic chemical reactions such as steam reforming of alcoholic (bio-) fuels. Traditional steam reformers require the combustion of up to 50% of the primary fuel to enable the endothermic reforming reaction. Our goal is to use a selective solar absorber coating on top of a collector-reactor surrounded by vacuum insulation. For methanol reforming, a reaction temperature of 220–250°C is required for effective methanol-to-hydrogen conversion. A multilayer absorber coating (TiNOX) is used, as well as a turbomolecular pump to reach ultra-high. The collector-reactor is made of copper tubes and plates and a Cu/ZnO/Al2O3 catalyst is integrated in a porous ceramic structure towards the end of the reactor tube. The device is tested under 1000 W/m2 solar irradiation (using an ABB class solar simulator, air mass 1.5). Numerical and experimental results show that convective and conductive heat losses are eliminated at vacuum pressures of <10−4 Torr. By reducing radiative losses through chemical polishing of the non-absorbing surfaces, the methanol-water mixture can be effectively heated to 240–250°C and converted to hydrogen-rich gas mixture. For liquid methanol-water inlet flow rates up to 1 ml/min per m2 of solar collector area can be converted to hydrogen with a methanol conversion rate above 90%. This study will present the design and fabrication of the solar collector-reactor, its testing and optimization, and its integration into an entire hydrogen-fed Polymer Electrolyte Membrane fuel cell system.
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