Corrosion behavior of surface-treated metallic implant materials
Corrosion of taper connections in total hip arthroplasty remains of concern, as particles and ions generated by corrosive processes can cause clinical problems such as periprosthetic osteolysis or adverse reaction to metallic debris. Mechanical surface treatments that introduce compressive residual...
Gespeichert in:
| Hauptverfasser: | , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
25 April 2020
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| In: |
Materials
Year: 2020, Jahrgang: 13, Heft: 9 |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma13092011 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.3390/ma13092011 Verlag, lizenzpflichtig, Volltext: https://www.mdpi.com/1996-1944/13/9/2011 
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| Verfasserangaben: | Therese Bormann, Phuong Thao Mai, Jens Gibmeier, Robert Sonntag, Ulrike Müller and J. Philippe Kretzer |
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| 520 | |a Corrosion of taper connections in total hip arthroplasty remains of concern, as particles and ions generated by corrosive processes can cause clinical problems such as periprosthetic osteolysis or adverse reaction to metallic debris. Mechanical surface treatments that introduce compressive residual stresses (RSs) in metallic materials can lead to a better performance in terms of fretting and fatigue and may lower the susceptibility to corrosion. The study investigates the impact of mechanical surface treatments on the corrosion behavior of metallic biomaterials. Compressive RSs were introduced by deep rolling and microblasting in Ti6Al4V and CoCrMo samples. Polished samples served as reference. Corrosion behavior was characterized by repeated anodic polarization. Residual stresses of up to about - 900 MPa were introduced by deep rolling with a reach in depth of approximately 500 µm. Microblasting led to compressive RSs up to approximately - 800 and - 600 MPa for Ti6Al4V and CoCrMo, respectively, in the immediate vicinity of the surface. For Ti6Al4V, microblasting resulted in decreased corrosion resistance with lower breakdown potentials and/or increased passive current densities in comparison to the polished and deep-rolled samples. The corrosion behavior of CoCrMo on the other hand was not affected by the mechanical surface treatments. | ||
| 650 | 4 | |a anodic polarization | |
| 650 | 4 | |a biomaterial | |
| 650 | 4 | |a corrosion | |
| 650 | 4 | |a implant | |
| 650 | 4 | |a residual stress | |
| 650 | 4 | |a surface treatment | |
| 650 | 4 | |a taper connection | |
| 650 | 4 | |a total hip replacement | |
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