scholarly journals Oxidation and electrical properties of chromium-iron binary alloys in a corrosive molten electrolyte environment

2020 ◽  
Author(s):  
Mohsen Esmaily ◽  
Nooshin Mortazavi ◽  
Nick Birbilis ◽  
Antoine Allanore

Chromium-iron (CrFe) binary alloys have recently been proposed to serve as the ʺinertʺ anode for molten oxide electrolysis (MOE). Herein, the effects of anodic polarization on physical and functional properties of CrFe anodes in the corrosive environment of MOE are studied via empirical observations and theoretical calculations. The findings indicate that the alloys form an inner chromia-alumina solid-solution covered by an MgCr2O4 spinel layer. A survey into the electrical properties of the detected oxides suggests that the layered oxide scale function as an efficient conductor of electricity at elevated temperature. The formation mechanism of the oxides is also investigated.

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
M. Esmaily ◽  
A. N. Mortazavi ◽  
N. Birbilis ◽  
A. Allanore

Abstract Chromium–iron (CrFe) binary alloys have recently been proposed to serve as the “inert” anode for molten oxide electrolysis (MOE). Herein, the effects of anodic polarization on physical and functional properties of CrFe anodes in the corrosive environment of MOE are studied via empirical observations and theoretical calculations. The findings indicate that the alloys form an inner chromia–alumina solid-solution covered by an MgCr2O4 spinel layer. A survey into the electrical properties of the detected oxides suggests that the layered oxide scale function as an efficient conductor of electricity at elevated temperature. The formation mechanism of the oxides is also investigated.


2021 ◽  
Vol 32 (5) ◽  
pp. 6607-6622
Author(s):  
Lagen Kumar Pradhan ◽  
Suman Kumari ◽  
Murli Kumar Manglam ◽  
Rabichandra Pandey ◽  
Manoranjan Kar

1991 ◽  
Vol 38-39 ◽  
pp. 83-98
Author(s):  
Kamanio Chattopadhyay ◽  
K. Raviprasad

2019 ◽  
Vol 297 ◽  
pp. 564-575 ◽  
Author(s):  
T.W. Cain ◽  
C.F. Glover ◽  
J.R. Scully
Keyword(s):  

2017 ◽  
Vol 310 ◽  
pp. 154-165 ◽  
Author(s):  
Fayçal Bourguiba ◽  
Ah. Dhahri ◽  
S.E.L. Kossi ◽  
J. Dhahri ◽  
K. Khirouni ◽  
...  

2013 ◽  
Vol 479-480 ◽  
pp. 3-7
Author(s):  
Chun Huy Wang

In the present study, various quantities of Bi2O3were added into 0.98(Na0.5K0.5)NbO3-0.02Bi(Na0.93K0.07)TiO3(0.98NKN-0.02BNKT) ceramics. It was found that 0.98NKN-0.02BNKTwith the addition of 0~0.5 wt.% Bi2O3exhibit relatively good piezoelectric properties. For 0.98NKN-0.02BNKT ceramics, the electromechanical coupling coefficients of the planar modekpand the thickness modektreach 0.40 and 0.47,respectively. For 0.98NKN-0.02BNKT ceramics with the addition of 0.3 wt.% Bi2O3, the electromechanical coupling coefficients ofthe planar modekpand the thickness modektreach 0.50 and 0.53, respectively. It is obvious that 0.98NKN-0.02BNKT solid solution ceramics by adding low quantities of Bi2O3is one of the promising lead-free ceramics for electromechanical transducer applications.


2021 ◽  
Author(s):  
S Sasikumar ◽  
Huiqing Fan ◽  
Weijia Wang ◽  
T K Thirumalaisamy ◽  
S Saravanakumar ◽  
...  

1992 ◽  
pp. 115-120
Author(s):  
C. Follet-Houttemane ◽  
J.C. Boivin ◽  
J.C. Champarnaud-Mesjard ◽  
D. Mercurio ◽  
B. Frit

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