NDLI: EIS and adjunct electrical modeling for material selection by evaluating two mild steels for use in super-alkaline mineral processing

Content Provider	Springer Nature Link
Author	Bakhtiyari, Leila Moghimi, Fereshteh Mansouri, Seyed Soheil Farsi, Ali Malek Shah, Masoud M.
Copyright Year	2011
Abstract	The production of metal concentrates during mineral processing of ferrous and non-ferrous metals involves a variety of highly corrosive chemicals which deteriorate common mild steel as the material of choice in the construction of such lines, through rapid propagation of localized pitting in susceptible parts, often in sensitive areas. This requires unscheduled maintenance and plant shut down. In order to test the corrosion resistance of different available materials as replacement materials, polarization and electrochemical impedance spectroscopy (EIS) tests were carried out. The EIS numerical outputs were then transformed into an equivalent electric circuit using Z-View software, and the predictive behavior was contrasted with actual performance after long-term immersion, depicted through SEM, EDS, XRD and weight change observations. Also, results of pits and cracks, obtained with climax software-enhanced polarization resistance, and reduced capacitance added to much diminished current densities, verified the acceptable performance of CK$_{45}$ compared with high priced stainless steel substitutes with comparable operational life. Therefore, CK$_{45}$ can be a suitable alternative in steel constructions which are exposed to super-alkaline and corrosive environments.
Starting Page	965
Ending Page	982
Page Count	18
File Format	PDF
ISSN	09226168
Journal	Research on Chemical Intermediates
Volume Number	38
Issue Number	3-5
e-ISSN	15685675
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-11-15
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Corrosion Selection of material Electrochemical impedance spectroscopy Electric circuit simulation SEM Catalysis Inorganic Chemistry Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Chemistry

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