Influence of oxide scale thickness on electrical conductivity of coated AISI 430 steel for use as interconnect in solid oxide fuel cells

Ionics ◽  
2012 ◽  
Vol 18 (6) ◽  
pp. 615-624 ◽  
Author(s):  
Hadi Ebrahimifar ◽  
Morteza Zandrahimi
Keyword(s):  
Electrical Conductivity ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Oxide Scale ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Scale Thickness ◽  
Aisi 430

Oxide scale formation on different metallic interconnects for solid oxide fuel cells

2012 ◽  
Vol 60 ◽  
pp. 38-49 ◽  
Author(s):  
Veronica Miguel-Pérez ◽  
Ana Martínez-Amesti ◽  
María Luisa Nó ◽  
Aitor Larrañaga ◽  
María Isabel Arriortua
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Oxide Scale ◽  
Scale Formation ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Metallic Interconnects

Effect of substrate thickness on oxide scale spallation for solid oxide fuel cells

2011 ◽  
Vol 53 (7) ◽  
pp. 2406-2412 ◽  
Author(s):  
W.N. Liu ◽  
X. Sun ◽  
E. Stephens ◽  
M. Khaleel
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Oxide Scale ◽  
Solid Oxide ◽  
Substrate Thickness ◽  
Oxide Fuel ◽  
Scale Spallation

Effects of Thermal Cycling on the Formation of Oxide Scale of Fe-Cr Alloy Interconnects for Solid Oxide Fuel Cells

2011 ◽  
Vol 8 (6) ◽  
pp. 1374-1381 ◽  
Author(s):  
Teruhisa Horita ◽  
Masashi Yoshinaga ◽  
Haruo Kishimoto ◽  
Katsuhiko Yamaji ◽  
Manuel E. Brito ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Thermal Cycling ◽  
Oxide Scale ◽  
Solid Oxide ◽  
Oxide Fuel

Structure, electrical, and thermal expansion properties of (La0.8Ca0.2)(Cr0.9–xCo0.1Nix)O3–δ interconnect materials for intermediate temperature solid oxide fuel cells

2009 ◽  
Vol 24 (5) ◽  
pp. 1748-1755 ◽  
Author(s):  
Yen-Pei Fu ◽  
Hsin-Chao Wang
Keyword(s):  
Electrical Conductivity ◽  
Fracture Toughness ◽  
Grain Size ◽  
Thermal Expansion ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Thermal Expansion Coefficient ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Nickel Doping

The microstructure, lattice parameters, electrical conductivity, thermal expansion, and mechanical properties of (La0.8Ca0.2)(Cr0.9–xCo0.1Nix)O3–δ (x = 0.03, 0.06, 0.09, 0.12) were systematically investigated in this work. Nickel doping of (La0.8Ca0.2)(Cr0.9Co0.1)O3–δ is an effective way of increasing the thermal expansion coefficient (TEC) and stabilizing the high-temperature phase transformation from rhombohedral to tetragonal. As the nickel-doped content increases, the TEC increases parabolically by TEC (x) (ppm/°C) = 10.575 + 63.3x−240x2 (x = 0.03−0.12). The electrical conductivity of (La0.8Ca0.2)(Cr0.9–xCo0.1Nix)O3–δ specimens increases systematically with increasing nickel substitution in the range of 0.03 ≤ x ≤ 0.09 and reaches a maximum for the composition of (La0.8Ca0.2)(Cr0.81Co0.1Ni0.09)O3–δ (σ850 °C ∼60.36 S/cm). There is a slight increase in the fracture toughness with increasing nickel doping content, and the fracture toughness is strongly affected by the grain size. It seems that there is an increase in the fracture toughness with decreasing grain size. However, the microhardness does not significantly depend on the grain size in this study. The (La0.8Ca0.2)(Cr0.81Co0.1Ni0.09)O3–δ specimen shows high electrical conductivity, a moderate thermal expansion coefficient, and nearly linear thermal expansion behavior from room temperature to 800 °C. It will be suitable for interconnect materials for intermediate temperature solid oxide fuel cells (IT-SOFCs).

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