The corrosion resistance effect of nanocomposites containing AuNPs coated onto titanium surfaces

YENİYOL S., MUTLU İ., Di̇Zman H. M., ARSU N.

Sigma Journal of Engineering and Natural Sciences, vol.43, no.2, pp.562-569, 2025 (ESCI) identifier

  • Publication Type: Article / Article
  • Volume: 43 Issue: 2
  • Publication Date: 2025
  • Doi Number: 10.14744/sigma.2025.00044
  • Journal Name: Sigma Journal of Engineering and Natural Sciences
  • Journal Indexes: Emerging Sources Citation Index (ESCI), Scopus, Academic Search Premier, Directory of Open Access Journals
  • Page Numbers: pp.562-569
  • Keywords: AuNPs, Corrosion, Dental implants, Metal ion release, Polymeric nanocomposites
  • Istanbul Gelisim University Affiliated: Yes

Abstract

The purpose of this work was to evaluate the corrosion of commercially pure titanium (cpTi) and polymeric AuNPs nanocomposite thin film coatings on cpTi in vitro in artificial saliva by using different electrochemical tests and surface analysis techniques. Electrochemical impedance spectroscopy (EIS), open circuit potential (OCP) and inductively coupled plasma mass spectrometry (ICP-MS) were associated with FESEM for surface characterization. OCP tests revealed higher potential values for AuNPs-Coated surfaces. Increase of the corrosion resistance for AuNPs-Coated surface was presented by EIS in artificial saliva. Average size of 20 - 30 nm AuNPs in spherical morphology forming agglomerations were observed on AuNPs-Coated surfaces. Compared to cpTi surfaces, a lower release tendency of Ti ions from the AuNPs-Coated Ti surfaces after immersion into artificial saliva was confirmed by ICP-MS. Results suggest that AuNPs-Coated Ti surfaces exhibit an enhanced corrosion resistance.