Electrochemical behaviour of Ti-6Al-4V alloy with different microstructures in a simulated bio-environment
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2016
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The electrochemical behaviour of the Ti-6Al-4V ELI alloy with different microstructures was investigated in Ringers solution at 25 degrees C. It was found that the properties of both inner barrier and outer porous layers of the passive film were dependent on the microstructural morphology and distribution of the alloying elements resulting in various amounts of their oxides incorporated in the TiO2 matrix. A more resistant and capacitive barrier layer formed on the alloy with fully lamellar, martensitic and globular microstructures in different thickness assured its high corrosion protection. The improved corrosion resistance of the alloy with equiaxed microstructure was provided by the existence of the larger amounts of the Al2O3 and V2O5 oxides, contributing to higher resistance of the outer porous layer. The Al2O3 amount is smaller than that of the V2O5 oxide due to its higher dissolution, especially in the case of the alloy with fully lamellar microstructure, resulting in the forma...tion of a more porous outer layer.
Keywords:
EIS / electrochemical behaviour / heat treatment / passive films / titanium alloySource:
Materials and Corrosion (Werkstoffe und Korrosion), 2016, 67, 10, 1075-1087Funding / projects:
- Micromechanical criteria of damage and fracture (RS-MESTD-Basic Research (BR or ON)-174004)
- Synthesis, processing and applications of nanostructured multifunctional materials with defined properties (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45019)
DOI: 10.1002/maco.201508796
ISSN: 0947-5117; 1521-4176
WoS: 000385661000008
Scopus: 2-s2.0-85028267174
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VinčaTY - JOUR AU - Cvijović-Alagić, Ivana AU - Cvijović, Zorica M. AU - Bajat, Jelena B. AU - Rakin, Marko P. PY - 2016 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1280 AB - The electrochemical behaviour of the Ti-6Al-4V ELI alloy with different microstructures was investigated in Ringers solution at 25 degrees C. It was found that the properties of both inner barrier and outer porous layers of the passive film were dependent on the microstructural morphology and distribution of the alloying elements resulting in various amounts of their oxides incorporated in the TiO2 matrix. A more resistant and capacitive barrier layer formed on the alloy with fully lamellar, martensitic and globular microstructures in different thickness assured its high corrosion protection. The improved corrosion resistance of the alloy with equiaxed microstructure was provided by the existence of the larger amounts of the Al2O3 and V2O5 oxides, contributing to higher resistance of the outer porous layer. The Al2O3 amount is smaller than that of the V2O5 oxide due to its higher dissolution, especially in the case of the alloy with fully lamellar microstructure, resulting in the formation of a more porous outer layer. T2 - Materials and Corrosion (Werkstoffe und Korrosion) T1 - Electrochemical behaviour of Ti-6Al-4V alloy with different microstructures in a simulated bio-environment VL - 67 IS - 10 SP - 1075 EP - 1087 DO - 10.1002/maco.201508796 ER -
@article{ author = "Cvijović-Alagić, Ivana and Cvijović, Zorica M. and Bajat, Jelena B. and Rakin, Marko P.", year = "2016", abstract = "The electrochemical behaviour of the Ti-6Al-4V ELI alloy with different microstructures was investigated in Ringers solution at 25 degrees C. It was found that the properties of both inner barrier and outer porous layers of the passive film were dependent on the microstructural morphology and distribution of the alloying elements resulting in various amounts of their oxides incorporated in the TiO2 matrix. A more resistant and capacitive barrier layer formed on the alloy with fully lamellar, martensitic and globular microstructures in different thickness assured its high corrosion protection. The improved corrosion resistance of the alloy with equiaxed microstructure was provided by the existence of the larger amounts of the Al2O3 and V2O5 oxides, contributing to higher resistance of the outer porous layer. The Al2O3 amount is smaller than that of the V2O5 oxide due to its higher dissolution, especially in the case of the alloy with fully lamellar microstructure, resulting in the formation of a more porous outer layer.", journal = "Materials and Corrosion (Werkstoffe und Korrosion)", title = "Electrochemical behaviour of Ti-6Al-4V alloy with different microstructures in a simulated bio-environment", volume = "67", number = "10", pages = "1075-1087", doi = "10.1002/maco.201508796" }
Cvijović-Alagić, I., Cvijović, Z. M., Bajat, J. B.,& Rakin, M. P.. (2016). Electrochemical behaviour of Ti-6Al-4V alloy with different microstructures in a simulated bio-environment. in Materials and Corrosion (Werkstoffe und Korrosion), 67(10), 1075-1087. https://doi.org/10.1002/maco.201508796
Cvijović-Alagić I, Cvijović ZM, Bajat JB, Rakin MP. Electrochemical behaviour of Ti-6Al-4V alloy with different microstructures in a simulated bio-environment. in Materials and Corrosion (Werkstoffe und Korrosion). 2016;67(10):1075-1087. doi:10.1002/maco.201508796 .
Cvijović-Alagić, Ivana, Cvijović, Zorica M., Bajat, Jelena B., Rakin, Marko P., "Electrochemical behaviour of Ti-6Al-4V alloy with different microstructures in a simulated bio-environment" in Materials and Corrosion (Werkstoffe und Korrosion), 67, no. 10 (2016):1075-1087, https://doi.org/10.1002/maco.201508796 . .