Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

The implant material, Ti6Al7Nb: surface microstructure, composition and properties.

C Sittig1, G Hähner, A Marti

  • 1Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Sonneggstr. 5, CH - 8092 Zürich, Switzerland.

Journal of Materials Science. Materials in Medicine
|September 7, 2004
PubMed
Summary

The oxide layer on Ti6Al7Nb alloy, crucial for biocompatibility, contains aluminum and niobium. Surface analysis revealed distinct oxide compositions and charges across microstructural phases, impacting biological interactions.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Reply to: "Comment on volcanic monitoring of the 2021 La Palma eruption using long-period magnetotelluric data".

Scientific reports·2025
Same author

Machine learning in subsurface physical properties and lithofacies prediction in a mining context.

Scientific reports·2025
Same author

Response to Letter to the Editor Clinical Nutrition.

Clinical nutrition (Edinburgh, Scotland)·2024
Same author

Imaging leachate runoff from a landfill using magnetotellurics: The Garraf karst case.

The Science of the total environment·2024
Same author

Characterization and nutritional valorization of agricultural waste corncobs from Italian maize landraces through the growth of medicinal mushrooms.

Scientific reports·2023
Same author

Volcanic monitoring of the 2021 La Palma eruption using long-period magnetotelluric data.

Scientific reports·2023

Area of Science:

  • Biomaterials Science
  • Surface Chemistry
  • Materials Science

Background:

  • Titanium alloys are vital for biomedical implants due to their biocompatibility.
  • Surface properties, particularly the passive oxide layer, dictate biological interactions.
  • Understanding the oxide layer's composition and structure is key to optimizing titanium alloy performance.

Purpose of the Study:

  • To characterize the oxide layer on Ti6Al7Nb alloy.
  • To investigate the distribution and oxidation states of alloying elements (Al, Nb) within the oxide layer.
  • To explore the relationship between surface microstructure, oxide properties, and pH-dependent surface charges.

Main Methods:

  • X-ray photoelectron spectroscopy (XPS) for surface composition analysis.

Related Experiment Videos

  • Scanning Auger microscopy (SAM) for elemental distribution mapping.
  • pH-dependent lateral force microscopy (LFM) for friction and surface charge characterization.
  • Electron microprobe analysis (EMPA) to determine underlying microstructure.

    • Main Results:

    • The oxide layer on Ti6Al7Nb incorporates aluminum (Al2O3) and niobium (Nb2O5) in their stable oxidized forms.
    • Elemental distribution within the oxide layer correlates with the underlying alpha-beta microstructure.
    • Al enrichment is observed in the alpha-phase, while Nb is enriched in the beta-phase.
    • Lateral force microscopy revealed pH-dependent friction variations, indicating localized surface charge differences between alpha and beta phases.

    Conclusions:

    • The passive oxide layer on Ti6Al7Nb is complex, with alloying elements influencing its composition and distribution.
    • Microstructural variations lead to subtle, pH-dependent differences in surface charge and friction.
    • These findings provide insights into the surface chemistry governing the biocompatibility of Ti6Al7Nb alloys.