Journal
CORROSION SCIENCE
Volume 208, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2022.110611
Keywords
Diamond-like carbon; Corrosion; Simulated body fluid; X-ray photoelectron spectroscopy; Near-edge X-ray absorption fine structure
Funding
- Suranaree University of Technology
- National Research Council of Thailand [SUT7-713-59-24-21]
- Synchrotron Light Research Institute (SLRI) , Thailand
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The structures and corrosion behavior of titanium-doped DLC films on 316L SS were investigated. It was found that titanium doping improved the corrosion resistance of DLC films, and the inhibition efficiency was further enhanced when antiplatelet drugs were present in the simulated body fluid.
The structures of pure (DLC), 5.33 at% Ti-doped (DLC:Ti_1), and 15.24 at% Ti-doped (DLC:Ti_2) DLC films coated on 316L SS were investigated using X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure spectroscopy. Their corrosion behavior was studied using electrochemical techniques. DLC:Ti_1 exhibited outstanding corrosion resistance with the lowest icorr and highest Rp. Its corrosion resistance improved further when antiplatelet drugs [ticlopidine (T1) and aspirin (A1)] were present in the simulated body fluid (SBF), as indicated by the increase in the inhibition efficiency of DLC:Ti_1-SBF from 84.21 to 93.26 and to 97.04% for both DLC:Ti_1-A1 and DLC:Ti_1-T1, respectively.
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