| Title: | The effect of metallographic preparation on the surface characteristics and corrosion behaviour of Ti-6Al-4V alloy in simulated physiological solutions |
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| Authors: | ID Milošev, Ingrid, Institut "Jožef Stefan" (Author)
ID Sačer, Denis, Institut "Jožef Stefan" (Author)
ID Kapun, Barbara, Institut "Jožef Stefan" (Author)
ID Rodič, Peter, Institut "Jožef Stefan" (Author) |
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| Files: |  URL - Source URL, visit https://iopscience.iop.org/article/10.1149/1945-7111/ad8e89
 PDF - Presentation file, download (7,67 MB)
MD5: 1813EC472C8596D8AFAC554CB453EE36
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | This study aimed to determine the effect of surface metallographic preparation (grinding, diamond polishing, and chemo-mechanical polishing using silica and hydrogen peroxide) on the surface roughness, morphology, chemical composition, and electrochemical behaviour of Ti-6Al-4V alloy. Roughness decreases from ca. 0.2 μm to 0.02 μm from grinding to polishing. A typical α+β microstructure can be observed only after chemo-mechanical polishing. The average composition of ca. 6 wt% Al, 4 wt% V, and rest Ti was determined regardless of the surface preparation. X-ray photoelectron spectroscopy revealed that the thickness of the oxide layer formed on chemo-mechanical polished samples is half that of ground samples. The metallographic preparation largely affects the corrosion behaviour of Ti-6Al-4V, which was investigated using electrochemical impedance spectroscopy and potentiodynamic polarisation in 0.9 wt% NaCl and artificial saliva at 37°C. At the open circuit potential, the chemo-mechanically polished Ti-6Al-4 samples showed superior corrosion resistance over ground samples. At potentials over 2.5 V vs Ag/AgCl, increased current densities were noted for chemo-mechanically polished samples, presumably related to the oxidation to a thicker oxide |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 14.08.2024 |
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| Publication date: | 13.11.2024 |
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| Publisher: | IOP Publishing |
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| Year of publishing: | 2024 |
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| Number of pages: | 16 str. |
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| Numbering: | Vol. 171, No. 11 |
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| Source: | Združeno kraljestvo |
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| PID: | 20.500.12556/DiRROS-22076  |
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| UDC: | 544.7 |
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| ISSN on article: | 1945-7111 |
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| DOI: | 10.1149/1945-7111/ad8e89 |
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| COBISS.SI-ID: | 215168259 |
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| Copyright: | © 2024 The Author(s). |
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| Publication date in DiRROS: | 18.04.2025 |
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| Views: | 611 |
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| Downloads: | 252 |
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| Metadata: |    |
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