Microstructure and biocorrosion studies of spark plasma sintered yttria stabilized zirconia reinforced Ti6Al7Nb alloy in Hanks' solution

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2023-10-19
Major/Subject
Mcode
Degree programme
Language
en
Pages
10
Series
Materials Chemistry and Physics, Volume 293
Abstract
A study of spark plasma sintered Ti6Al7Nb alloy reinforced with yttria stabilized zirconia (YSZ) has been carried out to assess the biocorrosion response in Hank's solution. The results indicate that the microstructural changes resulting from YSZ addition to Ti6Al7Nb were considerably different from pure Ti6Al7Nb. All the Ti6Al7Nb + YSZ composites showed a higher Vickers microhardness value with Ti6Al7Nb + 10%YSZ exhibiting the most enhanced hardness value of 955.3 HV0.1. Furthermore, all Ti6Al7Nb + YSZ present higher corrosion resistance in Hank's solution than Ti6Al7Nb alloy except Ti6Al7Nb + 1YSZ which shows a significant drop in Ecorr and Icorr values. This could be due to grain refinement with less stable oxide film growth kinetics. The combination of mechanical property and corrosion resistance of the fabricated Ti6Al7Nb + YSZ alloy could make it a suitable material for dental implant in the nearest future.
Description
Funding Information: The authors are grateful to National Research Foundation (NRF), South Africa for financial support under the.Thuthuka Grant number TTK180419322687 UID: 117843 . Publisher Copyright: © 2022 The Authors
Keywords
Biomedical, Dental implant, Potentiodynamic polarization, Ti6Al7Nb, Yttria stabilized zirconia
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Citation
Msweli , N P , Akinwamide , S O , Olubambi , P A & Obadele , B A 2023 , ' Microstructure and biocorrosion studies of spark plasma sintered yttria stabilized zirconia reinforced Ti6Al7Nb alloy in Hanks' solution ' , Materials Chemistry and Physics , vol. 293 , 126940 . https://doi.org/10.1016/j.matchemphys.2022.126940