Abstract
The surface of Ti-13Nb-13Zr alloy was modified in 0.1M calcium hypophosphite (Ca(H2PO2)2) solutions via the addition of tricalcium phosphate, wollastonite or silica powders using a plasma electrolytic oxidation process. Depending on the anodizing bath chemical composition and applied voltage, various oxide layers were formed on the substrate. The morphology, cross-section and chemical composition of the Ti-13Nb-13Zr alloy surface were investigated using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (TL-XRD) and Raman spectroscopy. The surface roughness of the oxide layers was also measured. The corrosion behavior of the coatings was examined using potentiodynamic polarization in Ringer's solution. The surface modification improved their corrosion resistance in physiological fluid.
| Original language | English |
|---|---|
| Pages (from-to) | 59-69 |
| Number of pages | 11 |
| Journal | Surface and Coatings Technology |
| Volume | 276 |
| DOIs | |
| Publication status | Published - 25 Aug 2015 |
Keywords
- Corrosion resistance
- Plasma electrolytic oxidation
- Surface modification
- Titanium alloy
ASJC Scopus subject areas
- General Chemistry
- Condensed Matter Physics
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Materials Chemistry
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