The influence of vapor–gaseous envelope behavior on plasma electrolytic coating removal

Nev’yantseva, R. R.; Gorbatkov, S.A.; Парфенов, Е.В.; Быбин, А. А.

doi:10.1016/s0257-8972(01)01334-2

Cited by 41 publications

(22 citation statements)

References 1 publication

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“…These processes are used for surface finishing, including case hardening, nitriding and carbonitriding, [3,7,[17][18][19][20], surface oxidation [21][22][23][24][25], cleaning [26,27] and polishing [28][29][30] as well as stripping of defective coatings [6,31].…”

Section: Brief Characteristics Of Electrolytic Plasma Processesmentioning

confidence: 99%

“…With the forward biased junction, the EPP features a vapour gaseous envelope (VGE) surrounding the working electrode. Most of the voltage drop occurs 6 across the VGE which is a non-stationary object with a high field, promoting a plasma discharge in the gas media. With the reverse biased junction, the EPP on the anode features formation of a stationary oxide film which attains the majority of the voltage drop.…”

Section: Brief Characteristics Of Electrolytic Plasma Processesmentioning

confidence: 99%

“…For the anode EPPs, the electrode area ratio is less critical. Instead surface passivation of the working electrode is important which can lead to the growth of oxide films according to reaction (3), giving rise to a wide variety of PEO processes [47][48][49], or if (3) is overcome, to the surface cleaning and polishing to a mirror finish [50] as well as case hardening [51,52], nitriding [3] and coating stripping [6].…”

Section: Working Electrode Polaritymentioning

confidence: 99%

“…EPCS operates at the anodic polarisation of the working electrode under the transient type of boiling in the VGE [6,13]. These conditions are similar to the EPPo 10 except for anodic dissolution which is intensified by the boiling conditions, hence surface composition, roughness and dimensional tolerance are important.…”

Section: Processing Conditions and Required Surface Propertiesmentioning

confidence: 99%

“…These non-linearities may explain why EPPs could in practice surpass their conventional counterparts but represent major challenges for their theoretical description. As will be discussed below, although a range of partial EPP models has been developed, none of them covers all varieties of processing conditions ranging from plasma electrolytic oxidation (PEO) [5] to coating stripping (EPCS) [6] and from heat treatment (EPHT) [7] to surface cleaning (EPSC) and polishing (EPPo) [8].…”

mentioning

confidence: 99%

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Towards smart electrolytic plasma technologies: An overview of methodological approaches to process modelling

Парфенов

Yerokhin

Nev’yantseva

et al. 2015

Surface and Coatings Technology

155

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Article:Parfenov, E.V., Yerokhin, A., Nevyantseva, R. ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Abstract This paper reviews the present understanding of electrolytic plasma processes (EPPs) and approaches to their modelling. Based on the EPP type, characteristics and classification, it presents a generalised phenomenological model as the most appropriate one from the process diagnostics and control point of view. The model describes the system 'power supply -electrolyser -electrode surface' as a system with lumped parameters characterising integral properties of the surface layer and integral parameters of the EPP. The complexity of EPPs does not allow the drawing of a set of differential equations describing the treatment, although a model can be formalised for a particular process as a black box regression. Evaluation of dynamic properties reveals the multiscale nature of electrolytic plasma processes, which can be described by three time constants separated by 2-3 orders of magnitude (minutes, seconds and milliseconds), corresponding to different groups of characteristics in the model. Further developments based on the phenomenological approach and providing deeper insights into EPPs are proposed using frequency response methodology and electromagnetic field modelling. Examples demonstrating the efficiency of the proposed approach are supplied for EPP modelling with static and dynamic neural networks, frequency response evaluations and electromagnetic field calculations.

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Section: Brief Characteristics Of Electrolytic Plasma Processesmentioning

confidence: 99%

Section: Brief Characteristics Of Electrolytic Plasma Processesmentioning

confidence: 99%

Section: Working Electrode Polaritymentioning

confidence: 99%

Section: Processing Conditions and Required Surface Propertiesmentioning

confidence: 99%

mentioning

confidence: 99%

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Towards smart electrolytic plasma technologies: An overview of methodological approaches to process modelling

Парфенов

Yerokhin

Nev’yantseva

et al. 2015

Surface and Coatings Technology

155

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Plasma‐Electrolytic Polishing as a Post‐Processing Technology for Additively Manufactured Parts

Zeidler

Böttger‐Hiller

2022

Chemie Ingenieur Technik

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Additive manufacturing (AM) as a key enabling technology provides new options for engineering design of complex parts. Freeform shapes, grid‐like structures and internal cavities enable functional integration, reducing assembly and space requirements and increasing reliability. Metal AM technologies, however, require post‐processing in order to achieve acceptable surface roughness and ‐functionality. Plasma‐electrolytic polishing can, due to its toolless nature and excellent achievable surface properties, be a beneficial option.

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Laser removal of TiN from coated carbide substrate

Sundar

Mativenga

et al. 2009

Int J Adv Manuf Technol

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The influence of vapor–gaseous envelope behavior on plasma electrolytic coating removal

Cited by 41 publications

References 1 publication

Towards smart electrolytic plasma technologies: An overview of methodological approaches to process modelling

Towards smart electrolytic plasma technologies: An overview of methodological approaches to process modelling

Plasma‐Electrolytic Polishing as a Post‐Processing Technology for Additively Manufactured Parts

Laser removal of TiN from coated carbide substrate

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