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Related Experiment Videos

Characterizations of three surface-modified titanium oxide films.

G Wang1, X R Cheng

  • 1Department of Prosthodontics, College of Stomatology, Hubei Medical University, 65 Luoyu Road, Wuhan, Hubei, 430070, P. R. China.

The Chinese Journal of Dental Research
|April 21, 2001
PubMed
Summary

A new method combining anodic oxidation and thermal air treatment enhances pure titanium

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Area of Science:

  • Biomaterials Science
  • Surface Engineering
  • Materials Chemistry

Background:

  • Pure titanium is widely used in biomedical implants due to its biocompatibility.
  • Enhancing titanium's corrosion resistance and surface properties is crucial for implant longevity and performance.
  • Existing surface treatments may have limitations in achieving optimal passive film characteristics.

Purpose of the Study:

  • To develop and evaluate a novel surface treatment for pure titanium.
  • To investigate the combined effects of anodic oxidation and thermal air treatment on titanium's passive film.
  • To assess the impact of this treatment on corrosion resistance and biocompatibility.

Main Methods:

  • Titanium sheets were subjected to different surface treatments: natural oxide film (NOF), anodic oxide film (AOF), and heated anodic oxide film (HAOF).

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  • Characterization involved X-ray diffractometry for crystallinity, electrochemical corrosion testing for resistance, and contact angle measurements for hydrophilicity.
  • Comparative analysis was performed on the treated titanium surfaces.

    • Main Results:

    • The heated anodic oxide film (HAOF) exhibited superior corrosion resistance and increased crystallinity, indicating structural changes.
    • Anodic oxide film (AOF) demonstrated improved hydrophilicity compared to other treatments.
    • The combined treatment (HAOF) resulted in a more crystalline and corrosion-resistant passive layer.

    Conclusions:

    • Thermal air treatment following anodic oxidation is an effective method for creating a protective passive film on titanium.
    • This novel surface modification significantly enhances the corrosion resistance and crystallinity of pure titanium.
    • The findings suggest potential for improved biocompatibility and implant performance.