XPS analysis of nanolayer formed on AISI 304L SS after High-Voltage Electropolishing (HVEP)
| Autor: | Steinar Raaen, Tadeusz Hryniewicz, Krzysztof Rokosz |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
copper nitrate General Engineering phosphoric acid 02 engineering and technology AISI 304L SS High-Voltage Electropolishing (HVEP) XPS 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Copper nitrate bakrov nitrat elektropoliranje pod visokim naponom (HVEP) fosforna kiselina 0104 chemical sciences chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry lcsh:TA1-2040 lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology Phosphoric acid Nuclear chemistry |
| Zdroj: | Tehnički vjesnik Volume 24 Issue Supplement 2 Tehnički Vjesnik, Vol 24, Iss Supplement 2, Pp 321-326 (2017) |
| ISSN: | 1848-6339 1330-3651 |
| Popis: | U radu se predlaže novi postupak nazvan elektropoliranje pod visokim naponom - High-Voltage Electropolishing (HVEP) kako bi se dobila specifična svojstva površine obrađivanog metalnog materijala. Za HVEP obradu kao biomaterijal korišten je AISI 304L nehrđajući čelik. Druga karakteristika ovoga rada je primjena koncentrirane otopine fosforne kiseline kao elektrolita u bakrovom nitratu. Osnovna svrha HVEP-a u toj vrsti elektrolita bila je uključivanje bakarnih iona u pasivni površinski sloj. Takav se modificirani nanosloj analizirao primjenom X-ray Photoelectron Spectroscopy (XPS) kako bi se otkrio sastav dobivenog sloja. Učinjena je usporedba numeričkih rezultata, ovisno o primijenjenom naponu. Uz to, određeni su omjeri Cr/Fe i Cu/P kako bi se pokazale prednosti tog elektrokemijskog HVEP postupka. In the paper, a novel process named the High-Voltage Electropolishing (HVEP) is proposed to gain the specific surface properties on the treated metallic material. The AISI 304L stainless steel as the biomaterial was used for the HVEP treatment. Another feature of this work is using a concentrated phosphoric acid solution within the copper nitrate as electrolyte. The main purpose of the HVEP processing in that kind of electrolyte was to incorporate the copper ions into the passive surface film. Such a modified surface nanolayer was studied by means of the X-ray Photoelectron Spectroscopy (XPS) to reveal the composition of the obtained film. The comparison of the numerical results, dependent on the voltage applied, was performed. Moreover, the Cr/Fe and Cu/P ratios were determined to show the advantages of this electrochemical HVEP treatment. |
| Databáze: | OpenAIRE |
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