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Analytical and Bioanalytical Electrochemistry، جلد ۱۳، شماره ۱، صفحات ۶۶-۷۹
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عنوان انگلیسی Effect of Bias Voltage on Corrosion Behavior of Nanostructured TiN Coatings Deposited on Ti-6Al-4V Alloy by CAE-PVD Technique
چکیده انگلیسی مقاله In this study, TiN coatings were deposited on Ti-6Al-4V alloy surface using cathodic arc evaporation (CAE) deposition process at three different bias voltages (-150, -200 and -250 V) applied to the substrate. In this regard, the effect of bias voltage on the microstructure and corrosion behavior of coatings was studied. The microstructure of the coated specimens was analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and atomic force microscopy (AFM). The corrosion behavior of the coatings was studied by potentiodynamic polarization (PDP) experiments and electrochemical impedance spectroscopy (EIS) in the simulated media. Studies on SEM images showed that formed coatings at bias of -200 V exhibited the least amount of needle like cavities (0.4%) and macroparticles. Studying the effect of bias voltage on the corrosion behavior of the coatings deposited at three bias voltages showed that the maximum corrosion resistance was obtained at -200 V and this voltage had the least current density in polarization measurements (5.59×10-7 A/cm2). So, it was considered as the optimal bias voltage.
کلیدواژه‌های انگلیسی مقاله TiN nanostructured coating,Ti-6Al-4V,Physical vapor deposition (PVD),Bias Voltage,electrochemical impedance spectroscopy (EIS)
نویسندگان مقاله Arash Fattah-alhosseini |
Fahmideh street

Mahsa Mirzaei |
Department of Materials Engineering, Bu-Ali Sina University, Hamedan 65178-38695, Iran

Hassan Elmkhah |
Department of Materials Engineering, Bu-Ali Sina University, Hamedan 65178-38695, Iran

Kazem Babaei |
Department of Materials Engineering, Bu-Ali Sina University, Hamedan 65178-38695, Iran

نشانی اینترنتی https://www.abechem.com/article_245919_4069ad4654afb1b5938664ce7dbc1e69.pdf
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