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167:, can be subject to incorrect analysis when measuring the surface topography. Anodic dissolution under electropolishing conditions deburrs metal objects due to increased current density on corners and burrs. Most importantly, successful electropolishing should operate under diffusion limited constant current plateau, achieved by following current dependence on voltage (polarisation curve), under constant temperature and stirring conditions.
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in depth in the case of stainless steel) from the surface of the parts, while also removing small burrs or high spots. It can be used to reduce the size of parts when necessary.
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Due to its ease of operation and its usefulness in polishing irregularly-shaped objects, electropolishing has become a common process in the production of semiconductors.
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It is commonly used in the post-production of large metal pieces such as those used in drums of washing machines, bodies of ocean vessels and aircraft, and automobiles.
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reaction occurs, which normally produces hydrogen. Electrolytes used for electropolishing are most often concentrated acid solutions such as mixtures of
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As electropolishing can also be used to sterilize workpieces, the process plays an essential role in the food, medical, and pharmaceutical industries.
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To electropolish a rough surface, the protruding parts of a surface profile must dissolve faster than the recesses. This process, referred to as
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Stainless steel preferentially removes iron from the surface and enhances the chromium/nickel content for the most superior form of
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passes from the anode, where metal on the surface is oxidised and dissolved in the electrolyte, to the cathode. At the cathode, a
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217:.15730:2000 Metallic and other Inorganic Coatings - Electropolishing as a Means of Smoothing and Passivating Stainless Steel
132:; it is connected to the positive terminal of a DC power supply, the negative terminal being attached to the cathode. A
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Electropolishing can be used on a wide range of metals including stainless steel, aluminum, copper, brass and titanium.
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tomography because the process does not mechanically deform surface layers like mechanical polishing does.
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While nearly any metal may be electropolished, the most-commonly polished metals are 300- and 400-series
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148:. Other electropolishing electrolytes reported in the literature include mixtures of
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ASTM E1558, Standard Guide for
Electrolytic Polishing of Metallographic Specimens
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Typically, the work-piece is immersed in a temperature-controlled bath of
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SEMI F19, Electropolishing
Specifications for Semiconductor Applications
50:. Electropolishing is often compared to, but distinctly different from,
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B 912-02 (2008), Passivation of
Stainless Steels Using Electropolishing
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process that removes material from a metallic workpiece, reducing the
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Vander Voort, G.F. ed. (2004) "Chemical and
Electrolytic Polishing,"
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Electropolishing is commonly used to prepare thin metal samples for
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Can polish areas that are inaccessible by other polishing methods.
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Creates a clean, smooth surface that is easier to sterilise.
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metal parts. It is often described as the reverse of
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Removes a small amount of material (typically 20-40
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by levelling micro-peaks and valleys, improving the
394:Anopol Limited/British Stainless Steel Association
110:Particle moving from the work-piece to the cathode
416:"Electropolishing applications and techniques"
433:F. Kelly, Thomas; K. Miller, Michael (2007).
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414:Cutchin, Johnson H. Sr. (October 27, 2015).
359:"The "Then & Now" of Electropolishing"
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387:"Surface Texture: Electroplishing and Ra"
156:(which has caused fatal explosions), and
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245:The results are aesthetically pleasing.
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439:Review of Scientific Instruments
199:transmission electron microscopy
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366:Anopol Limited/Surface World
160:solutions of sulfuric acid.
105:Work-piece to polish (Anode)
70:. It may be used in lieu of
90:Electropolishing principle:
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52:electrochemical machining
24:electrochemical polishing
304:Polishing (metalworking)
115:Surface before polishing
486:Metallurgical processes
435:"Atom probe tomography"
299:Passivation (chemistry)
120:Surface after polishing
16:Electrochemical process
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32:electrolytic polishing
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265:for stainless steel.
34:(especially in the
481:Chemical processes
128:and serves as the
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74:fine polishing in
452:10.1063/1.2709758
346:978-0-87170-706-2
338:ASM International
314:Surface finishing
192:Ultra-high vacuum
44:surface roughness
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284:Electrochemistry
154:acetic anhydride
54:. It is used to
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22:, also known as
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309:Stainless steel
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165:anodic leveling
150:perchloric acid
146:phosphoric acid
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397:. Retrieved
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369:. Retrieved
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171:Applications
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263:passivation
126:electrolyte
95:Electrolyte
475:Categories
320:References
256:micrometre
203:atom probe
158:methanolic
279:Corrosion
209:Standards
138:reduction
82:Mechanism
60:passivate
461:17411171
399:20 March
371:20 March
273:See also
240:Benefits
72:abrasive
134:current
100:Cathode
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64:deburr
62:, and
56:polish
390:(PDF)
362:(PDF)
152:with
130:anode
30:, or
457:PMID
401:2017
373:2017
342:ISBN
230:ASTM
221:ASME
201:and
144:and
447:doi
215:ISO
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
