Abstract
Long-term effect of plasma electrolytic oxidation (PEO) coatings on in vitro corrosion of 3D Mg implant specimens has been investigated in simulated body fluid (SBF). Hydrogen evolution rate in PEO-coated specimens was 35 times lower compared to the non-coated alloy during first 2 weeks of immersion (0.04–0.07 mL cm−2 d−1) and reached a steady-state rate of 0.3 mL cm−2 d−1 by week 6 of immersion. Studies of the tribocorrosion behaviour of the PEO-coated alloy disclosed that the coatings rapidly lose their tribocorrosion resistance due to hydration of the coating material and associated drastic decrease of microhardness but exhibit a better tirbocorrosion performance than the non-coated material.
Original language | English |
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Pages (from-to) | 810-823 |
Number of pages | 14 |
Journal | Applied Surface Science |
Volume | 389 |
Early online date | 3 Aug 2016 |
DOIs | |
Publication status | Published - 15 Dec 2016 |
Keywords
- Characterization
- Corrosion
- Magnesium
- PEO coating
- Wear