Electrolytic Polishing of Zn-Al-Cu Alloys / Elektrolytisches Polieren von Zn-Al-Cu-Legierungen

The present paper studies electropolishing conditions on a Zn–22l–2Cu, multiphase alloy called Zinalco. The aim of this work is to obtain reproducible surfaces free of mechanical damage to be used in subsequent corrosion and thin film growing studies. Polarisation curves show that temperature and current density are the most relevant parameters in order to obtain good quality polished surfaces. The specimen morphology was observed by scanning electron microscopy, showing regions with different contrasts and with no pits, nor preferentially etched zones. Energy dispersive X-ray spectroscopy reveals differences in chemical composition associated with regions of different contrast. The surface chemical composition was obtained using X-ray photoelectron spectroscopy and Auger electron spectroscopy. Results indicate a surface formed by Zn and Al oxides with Al enrichment. Finally, surface profile measurements were carried out in order to evaluate the electropolishing conditions.

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Electrolytic Polishing of Zn-Al-Cu Alloys / Elektrolytisches Polieren von Zn-Al-Cu-Legierungen

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Machining Characteristics of the Electropolishing of Stainless Steel (STS316L)

Machining Characteristics of the Electropolishing of Stainless Steel (STS316L)

Electropolishing of Zinalco and characterisation of resulting surface

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