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Arash Fattah-alhosseini

Arash Fattah-alhosseini

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId: 26428133600
HIndex:
Faculty: Faculty of Engineering
Address:
Phone: 08138292505

Research

Title
Corrosion behavior of Ce-doped Ni-10Cu-11Fe-6Al (wt%) inert anode in molten CaCl2 salt
Type
JournalPaper
Keywords
Ni-10Cu-11Fe-6Al Ce doping Corrosion behavior Molten CaCl2 salt Nickel-based alloy Rare earths
Year
2019
Journal JOURNAL OF RARE EARTHS
DOI
Researchers Mehdi Alzamani ، Kourosh Jafarzadeh ، Arash Fattah-alhosseini

Abstract

In this research the effect of cerium dopingon corrosion behavior of Ni-10Cu-11Fe-6Al (wt%) alloy as a novel inert anode in titanium electrolytic production was investigated. The samples, including un-doped and Ce-doped nickel-based alloys, were prepared using vacuum induction melting (VIM) process and then exposed to the electrolysis in molten calcium chloride at 900 C at 1.6 V versus graphite reference electrode for different immersion time. The surface and cross-section of the samples were characterized using scanning electron microscopy (SEM), and their electrochemical behavior was investigated by electrochemical impedance spectroscopy (EIS). The results show that the un-doped samples have greater number of voids and porosities as compared to that of the 0.0064 wt% Ce-doped samples (as the optimum content of cerium in the alloy). Thus, the nickel-based alloy becomes less sensitive to the pitting by addition of cerium. The corrosion penetration depth reaches about 244 mm after 16 h of electrolysis in the un-doped sample, while was approximately 103 mm for the 0.0064 wt% Ce-doped sample, which is an indication that the corrosion penetration depth decreases by adding small amounts of Ce