Surface Coating Effect on Corrosion Resistance of Titanium Alloy Bone Implants by Anodizing Method

Eva Oktavia Ningrum*, Ianatul Khoiroh, Hanifah Inas Nastiti, Ryan Anindya Affan, Achmad Dwitama Karisma, Elly Agustiani, Agus Surono, Heri Suroto, S. Suprapto, Lulu Sekar Taji, Sinung Widiyanto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In the presented work, the formation of anodic oxide film on Ti-6Al-4V ELI (Extra Low Interstitial) alloy in 0.02 M trisodium phosphate (Na3PO4) electrolyte solution using various voltages were investigated. The color produced by the anodizing, the intensity of TiO2 content, the thickness of the oxide layer, and the corrosion rate were examined. It was obtained that the color appearance of Ti-6Al-4V ELI could be changed easily by altering the applied voltages. The higher the voltage applied in the anodizing process, the thicker the titanium oxide layer formed. The corrosion resistance analysis in a Simulated Body Fluid revealed that the non-anodized specimen showed a higher corrosion rate compared to the anodized specimen. The increase of oxide layer thickness leads to a significant decrease in corrosion rate and consequently increases the corrosion resistance. In addition, the anodized sample achieved the highest corrosion resistance at 15 V.

Original languageEnglish
Pages (from-to)749-760
Number of pages12
JournalInternational Journal of Technology
Issue number4
Publication statusPublished - 2023


  • Anodizing
  • Corrosion resistance
  • Ti-6Al-4V alloy
  • Titanium oxide


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