Tribocorrosion behavior of Ti64-xTa alloys fabricated through powder metallurgy
| Autor: | I. Farías, R. Suárez-Martínez, Luis Olmos, O. Jimenez, J. Chávez, José Lemus-Ruiz, Jose Luis Cabezas-Villa, M. Flores-Jimenez |
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| Rok vydání: | 2020 |
| Předmět: |
Corrosion potential
Materials science Passivation Mechanical Engineering Tribocorrosion Metallurgy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Corrosion Mechanics of Materials Powder metallurgy General Materials Science 0210 nano-technology Polarization (electrochemistry) |
| Zdroj: | Materials Letters. 280:128590 |
| ISSN: | 0167-577X |
| Popis: | The tribocorrosion behavior in simulated-body fluid of Ti64-xTa (x = 5, 15 and 30 vol%) alloys fabricated by means of powder metallurgy was evaluated. Ti64-xTa alloys demonstrated a better passivation behavior in comparison to Ti64, forming a more stable passive film. In addition, an important increment in the polarization resistance, and a decrement in the corrosion rate were observed as an effect of Ta addition. Larger corrosion potential drops during tribocorrosion tests indicated that the passive films formed on Ti64-xTa alloys surface were easily removed as the Ta amount increased. Moreover, despite the detrimental in the mechanical properties caused by the addition of Ta, alloys containing 5 and 15 vol% of Ta improved the wear rate of Ti64. The results demonstrated that Ti64 alloys with low Ta amounts fabricated through powder metallurgy are potentially suitable for short-term implant applications. |
| Databáze: | OpenAIRE |
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