Plasma Electrolytic Polishing—An Ecological Way for Increased Corrosion Resistance in Austenitic Stainless Steels

Zatkalíková, Viera; Podhorský, Štefan; Štrbák, Milan; Liptáková, Tatiana; Markovičová, Lenka; Kuchariková, Lenka

doi:10.3390/ma15124223

Cited by 6 publications

(5 citation statements)

References 44 publications

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“…The work presented in this Special Issue [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] demonstrates the possibilities of further improving the microstructure quality and mechanical properties of metal alloys.…”

mentioning

confidence: 93%

“…Corrosion resistance behavior of PEP treated AISI 316L stainless steel of plasma electrolytic polished surfaces without/with chemical pretreatment (acid cleaning) was evaluated and compared with original non-treated (as received) surfaces by three independent test methods in 0.9 wt.% NaCl solution at a temperature of 37 ± 0.5 • C: electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PP), and exposure immersion test [10]. The results obtained indicated high corrosion resistance of PEP treated surfaces also without chemical pretreatment, which increases the ecological benefits of PEP technology.…”

mentioning

confidence: 99%

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Quality, Microstructure, and Properties of Metal Alloys

Lipiński

2023

Materials

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confidence: 93%

mentioning

confidence: 99%

Quality, Microstructure, and Properties of Metal Alloys

Lipiński

2023

Materials

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“…The electrolytes are mostly environmentally friendly, low-concentration aqueous salt solutions [ 10 ]. The PeP process, firstly closer examined probably in 1979 [ 11 ], is a surface treatment technology that leads to very smooth, high-gloss surfaces with improved corrosion resistance [ 12 ] and is a promising postprocessing technology for additively manufactured parts [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Anode Immersion Speed on Current and Power in Plasma Electrolytic Polishing

Valentinčič,

Zeidler,

Böttger

et al. 2024

Micromachines

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Plasma electrolytic polishing (PeP) is mainly used to improve the surface quality and thus the performance of electrically conductive parts. It is usually used as an anodic process, i.e., the workpiece is positively charged. However, the process is susceptible to high current peaks during the formation of the vapour–gaseous envelope, especially when polishing workpieces with a large surface area. In this study, the influence of the anode immersion speed on the current peaks and the average power during the initialisation of the PeP process is investigated for an anode the size of a microreactor mould insert. Through systematic experimentation and analysis, this work provides insights into the control of the initialisation process by modulating the anode immersion speed. The results clarify the relationship between immersion speed, peak current, and average power and provide a novel approach to improve process efficiency in PeP. The highest peak current and average power occur when the electrolyte splashes over the top of the anode and not, as expected, when the anode touches the electrolyte. By immersion of the anode while the voltage is applied to the anode and counterelectrode, the reduction of both parameters is over 80%.

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“…This technology is based on the electric discharge phenomena in the "metal-electrolyte" system and it is a special case of electrochemical machining that uses environmentally friendly electrolytes [15,16]. The workpiece is an anode connected to the DC supply [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Plasma-Electrolytic Processing on EDMed Austenitic Steels

et al. 2023

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This study investigates the effect of electrolytic plasma processing on the degree of defective layer removal from a damaged layer obtained after manufacturing operations. Electrical discharge machining (EDM) is widely accepted in modern industries for product development. However, these products may have undesirable surface defects that may require secondary operations. This work aims to study the die-sinking EDM of steel components followed by the application of plasma electrolytic polishing (PeP) to enhance the surface properties. The results showed that the decrease in the roughness of the EDMed part after PeP was 80.97%. The combined process of EDM and subsequent PeP makes it possible to obtain the desired surface finish and mechanical properties. In the case of finishing EDM processing and turning, followed by PeP processing, the fatigue life is enhanced without failure up to 109 cycles. However, the application of this combined method (EDM + PeP) requires further research to ensure consistent removal of the unwanted defective layer.

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Plasma Electrolytic Polishing—An Ecological Way for Increased Corrosion Resistance in Austenitic Stainless Steels

Cited by 6 publications

References 44 publications

Quality, Microstructure, and Properties of Metal Alloys

Quality, Microstructure, and Properties of Metal Alloys

Influence of Anode Immersion Speed on Current and Power in Plasma Electrolytic Polishing

Investigation of Plasma-Electrolytic Processing on EDMed Austenitic Steels

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