Abstract
In the present work, we report the preparation of a novel titanium-based alloy, namely Ti25Nb10Zr, by cold crucible levitation melting technique. The cast alloy consists of a complex microstructure with large Beta phase grains (54%, 50-150 μm) with a regularly connected net of Alpha′ (orthorhombic, 46%) phase running along boundaries and across the grains and keeping a regular misorientation with respect to the Beta phase. An intermeshed 51% Alpha and 49% Beta phases with lamellar microstructure were found by annealing. The electrochemical tests showed that both alloys were affected by the corrosion process. A good corrosion resistance in SBF at 37 °C was found for the cast form. The cast alloy is more resistant when immersed into solutions with pH2 and pH7, while the annealed one is resistant in pH5 solution. Surface potential of both alloys is negative, with the annealing process leading to a slight decrease of that property. Collectively, the biological results indicate a more favorable viability on cast form as compared to annealed one, suggesting that the cast alloy is promising for biomedical applications.
| Original language | English |
|---|---|
| Pages (from-to) | 3399-3414 |
| Number of pages | 16 |
| Journal | Journal of Materials Research and Technology |
| Volume | 8 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Jul 2019 |
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Keywords
- Corrosion resistance
- SBF
- Surface potential
- Viability
ASJC Scopus subject areas
- Ceramics and Composites
- Biomaterials
- Surfaces, Coatings and Films
- Metals and Alloys
Cite this
Investigation of cast and annealed Ti25Nb10Zr alloy as material for orthopedic devices. / Bolmaro, Raúl; Parau, Anca C.; Pruna, Vasile; Surmeneva, Maria A.; Constantin, Lidia R.; Avalos, Martina; Cotrut, Cosmin M.; Tutuianu, Raluca; Braic, Mariana; Cojocaru, Danut V.; Dan, Ioan; Croitoru, Sorin; Surmenev, Roman A.; Vladescu, Alina.
In: Journal of Materials Research and Technology, Vol. 8, No. 4, 01.07.2019, p. 3399-3414.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Investigation of cast and annealed Ti25Nb10Zr alloy as material for orthopedic devices
AU - Bolmaro, Raúl
AU - Parau, Anca C.
AU - Pruna, Vasile
AU - Surmeneva, Maria A.
AU - Constantin, Lidia R.
AU - Avalos, Martina
AU - Cotrut, Cosmin M.
AU - Tutuianu, Raluca
AU - Braic, Mariana
AU - Cojocaru, Danut V.
AU - Dan, Ioan
AU - Croitoru, Sorin
AU - Surmenev, Roman A.
AU - Vladescu, Alina
PY - 2019/7/1
Y1 - 2019/7/1
N2 - In the present work, we report the preparation of a novel titanium-based alloy, namely Ti25Nb10Zr, by cold crucible levitation melting technique. The cast alloy consists of a complex microstructure with large Beta phase grains (54%, 50-150 μm) with a regularly connected net of Alpha′ (orthorhombic, 46%) phase running along boundaries and across the grains and keeping a regular misorientation with respect to the Beta phase. An intermeshed 51% Alpha and 49% Beta phases with lamellar microstructure were found by annealing. The electrochemical tests showed that both alloys were affected by the corrosion process. A good corrosion resistance in SBF at 37 °C was found for the cast form. The cast alloy is more resistant when immersed into solutions with pH2 and pH7, while the annealed one is resistant in pH5 solution. Surface potential of both alloys is negative, with the annealing process leading to a slight decrease of that property. Collectively, the biological results indicate a more favorable viability on cast form as compared to annealed one, suggesting that the cast alloy is promising for biomedical applications.
AB - In the present work, we report the preparation of a novel titanium-based alloy, namely Ti25Nb10Zr, by cold crucible levitation melting technique. The cast alloy consists of a complex microstructure with large Beta phase grains (54%, 50-150 μm) with a regularly connected net of Alpha′ (orthorhombic, 46%) phase running along boundaries and across the grains and keeping a regular misorientation with respect to the Beta phase. An intermeshed 51% Alpha and 49% Beta phases with lamellar microstructure were found by annealing. The electrochemical tests showed that both alloys were affected by the corrosion process. A good corrosion resistance in SBF at 37 °C was found for the cast form. The cast alloy is more resistant when immersed into solutions with pH2 and pH7, while the annealed one is resistant in pH5 solution. Surface potential of both alloys is negative, with the annealing process leading to a slight decrease of that property. Collectively, the biological results indicate a more favorable viability on cast form as compared to annealed one, suggesting that the cast alloy is promising for biomedical applications.
KW - Corrosion resistance
KW - SBF
KW - Surface potential
KW - Viability
UR - http://www.scopus.com/inward/record.url?scp=85069053891&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85069053891&partnerID=8YFLogxK
U2 - 10.1016/j.jmrt.2019.06.006
DO - 10.1016/j.jmrt.2019.06.006
M3 - Article
VL - 8
SP - 3399
EP - 3414
JO - Journal of Materials Research and Technology
JF - Journal of Materials Research and Technology
SN - 2238-7854
IS - 4
ER -