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Start Over Descriptor "Stellite alloy" Journal journal of materials engineering and performance
5 results on '"Stellite alloy"'

3. Electrochemical Study of Corrosion Behavior of Wrought Stellite Alloys in Sodium Chloride and Green Death Solutions

Author

M. X. Yao, X.Z. Zhang, Rachel Collier, Rong Liu, and Kuiying Chen

Subjects
Chemical compositions, Materials science, Sodium chloride, Alloy, Sodium alloys, Pitting, engineering.material, Electrochemistry, Cyclic polarization curves, Carbide, Corrosion behavior, Polarization, Corrosive effects, Pitting corrosion, Electrochemical corrosion, General Materials Science, Oxide films, Stellite, Polarization (electrochemistry), Cyclic polarization, Potentiodynamic polarization, Mechanical Engineering, Metallurgy, ELectrochemical methods, Potentiodynamic polarization curves, Dielectric spectroscopy, Corrosion, Stellite alloy, Mechanics of Materials, Electrochemical studies, Volume fraction, engineering, Carbides, Electrochemical impedance spectroscopy
Abstract

Corrosion behavior of wrought Stellite 6B and Stellite 6K, which have similar chemical composition but contain different carbon content, in 3.5 wt.% NaCl solution and in Green Death solution is investigated using various electrochemical methods, including potentiodynamic polarization, cyclic polarization, and electrochemical impedance spectroscopy (EIS). The obtained potentiodynamic polarization curves, cyclic polarization curves, and EIS spectra for these alloys are in good agreement, showing that Stellite 6K with higher carbon content is easier corroded due to its larger volume fraction of carbides but the Cr2O3 film formed on this alloy is stronger and more stable than that on Stellite 6B. Further immersion tests on these alloys show that Stellite 6K has less resistance to pitting corrosion.

Published
2015

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