Effect of frequency and duty cycle on corrosion behavior of pulsed nanocrystalline plasma electrolytic carbonitrided CP-Ti
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Potentiodynamic polarization and electrochemical impedance spectroscopy were employed to test carbonitrided CP-Ti, treated by a relatively new method called pulsed-plasma electrolytic carbonitriding. The results show excellent corrosion resistance for modified CP-Ti. The effect of frequency and duty cycle of pulsed current were investigated. It was found that pulse frequency and duty cycle affect the size and porosity of nanocrystalline carbonitrides and by controlling these effective parameters surface modification can render the CP-Ti material extremely corrosion resistant.
KeywordsCorrosion Rate Duty Cycle Electrochemical Impedance Spectroscopy Corrosion Behavior Potentiodynamic Polarization
The authors would like to express their gratitude to National Association of Nanoscience and Nanotechnology of Iran and Arvandan Oil and Gas Production Company (TMU 85-09-66) for financial support of this project.
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