Evaluation the corrosion resistance of Pt. thin films for medical applications

By using magnetron sputtering deposition method Platinum (Pt.) thin films have been deposited with 17nm and 34nm thin film thickness. Power RF used for depositing 5 nm of Titanium (Ti) before depositing thin films of Pt. by DC on Ni-Cr alloy substrates. Facilities used are SEM/EDX, Ellipsometry Spec...

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Bibliographic Details
Main Authors: Wadullah, Haitham M., Abbass, Muna Khethier, Ajeel, Sami Abualnoun, Hussein, Mohammed Younus
Format: Conference Proceeding
Language:English
Subjects:
Corrosion resistance
Electrochemical corrosion
Electrode polarization
Ellipsometry
Film thickness
Localized corrosion
Magnetron sputtering
Morphology
Nickel chromium alloys
Open circuit voltage
Platinum
Saliva
Substrates
Surgical implants
Thin films
Titanium
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Summary:By using magnetron sputtering deposition method Platinum (Pt.) thin films have been deposited with 17nm and 34nm thin film thickness. Power RF used for depositing 5 nm of Titanium (Ti) before depositing thin films of Pt. by DC on Ni-Cr alloy substrates. Facilities used are SEM/EDX, Ellipsometry Spectroscopy and Electrochemical potentiostat to investigate the morphology, element analysis, nanothickness, thin films roughness and electrochemical corrosion respectively. Cyclic polarization, Tafel extrapolation and open circuit potential (E o.c.p) methods on solution of artificial saliva at 37 ±1 °C have been used to study the resistance of localized corrosion. The results show the ability to deposit Pt. thin film with nanostructure morphology and without defect or crack with improving the localized electrochemical corrosion resistance in artificial saliva.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0000444