Microstructural aspects of Ti6Al4V degradation in H2O2-containing phosphate buffered saline
2021 (Engelska)Ingår i: Corrosion Science, ISSN 0010-938X, E-ISSN 1879-0496, Vol. 190, artikel-id 109640Artikel i tidskrift (Refereegranskat) Published
Abstract [en]
Ti6Al4V surfaces were exposed to simulated inflammation conditions in H2O2-containing phosphate buffered saline with and without FeCl3. Scanning electron microscopy analysis revealed significantly different degradation modes for the α and β phases. While the α grains are covered by a ca. 400 nm thick protective nanostructured oxide layer, the attack of the β phase generates a porous microstructure with microscaled cracks and a low polarization resistance. The β phase is postulated to be sensitive to H2O2 reduction products and less able to generate a passive oxide film. The presence of FeCl3 enhances the cathodic activity and the β phase degradation.
Ort, förlag, år, upplaga, sidor
Elsevier Ltd , 2021. Vol. 190, artikel-id 109640
Nyckelord [en]
Corrosion, Fenton chemistry, Implants, Inflammation, Titanium, Chlorine compounds, Iron compounds, Oxide films, Pathology, Scanning electron microscopy, Ternary alloys, Titanium alloys, Condition, Exposed to, Fenton's chemistry, H$-2$/O$-2$, Implant, Microstructural aspects, Phosphate-buffered salines, Scanning electrons, Ti-6al-4v, Titania
Nationell ämneskategori
Metallurgi och metalliska material
Identifikatorer
URN: urn:nbn:se:ri:diva-55853DOI: 10.1016/j.corsci.2021.109640Scopus ID: 2-s2.0-85109623073OAI: oai:DiVA.org:ri-55853DiVA, id: diva2:1587081
Anmärkning
Funding details: Eidgenössische Technische Hochschule Zürich, ETH; Funding text 1: The authors thank D. Le Berre and G. Ringot (both French Corrosion Institute) for helping with SEM imaging and for preparation of the samples with specific polishing procedure for cross-sectional analysis, respectively. The expertise of the microscopy centre of ETH Zurich (ScopeM) is acknowledged for FIB-SEM analysis.
2021-08-232021-08-232025-09-23Bibliografiskt granskad