Anodizing of titanium in NaOH solution and its corrosion resistance in PBS physiologic solution

Afshar, A ; Sharif University of Technology | 2003

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  1. Type of Document: Article
  2. Publisher: Sharif University of Technology , 2003
  3. Abstract:
  4. Titanium is a highly reactive metal with an inclination to compose with oxygen. In order to increase its corrosion resistance and application, therefore, a thin layer of titanium oxide is produced on the surface by chemical and electrochemical methods. In the present research, titanium has been anodized in 20 M of NaOH solution under potentiostatic conditions at constant voltages of 25 and 35 V. The microstructure of the anodic layers has been studied by the use of a Scanning Electron Microscope (SEM) and X-Ray Diffraction (XRD). The results indicated that the structure of the anodic layers is amorphous with low porosity and that thickness increases with an increase in anodizing voltage. The corrosion resistance of the anodized titanium in a Phosphate-Buffered Saline solution (PBS) is very low in comparison with non-anodized titanium, due to the compactive layers of the titanium oxide. Heat treatment of anodized titanium at 600°C for one hour had no effect on the corrosion resistance
  5. Keywords:
  6. Anodizing ; Titanium ; Corrosion inhibiting coating
  7. Source: Scientia Iranica ; Volume 10, Issue 3 , 2003 , Pages 361-366 ; 10263098 (ISSN)
  8. URL: http://scientiairanica.sharif.edu/article_2639.html