Title of article :
Comparison of Thermal Expansion Coefficient in Ln_0.6Sr_0.4Co_0.2M_0.8O_3−δ (Ln=La,Nd,Sm and M=Fe,Ni,Mn) as Cathode Materials for Solid Oxide Fuel Cell
Author/Authors :
Heydari, F. materials and energy research center (merc) - Department of Ceramic, كرج, ايران , Maghsoudipour, A. materials and energy research center (merc) - Department of Ceramic, كرج, ايران , Alizadeh, M. materials and energy research center (merc) - Department of Ceramic, كرج, ايران , khakpour, Z. materials and energy research center (merc) - Department of Ceramic, كرج, ايران , Javaheri, M. materials and energy research center (merc) - Department of Ceramic, كرج, ايران
From page :
27
To page :
31
Abstract :
In this study, Thermal expansion coefficient variation of Ln_0.6Sr_0.4Co_0.2M_0.8O_3−δ (Ln=La,Nd,Sm and M= Fe,Ni,Mn) perovskite oxide were evalouated. Different compounds were prepared and thermal expansion coefficient were meseaured in different temperature by means of dilatometer analysis. Structural parameters of compounds were determined by X-ray diffraction and Field Emission Scanning Electron Microscopy (FE-SEM) was used for the morphological study. Using Nd^3+ instead of La^3+ led to tilting of the BO6 octahedra, phase transition from rhombohedral to the orthorhombic. Experimental results showed TEC decreases favorably with substitution of Nd^3+ and Mn^3+ ions in the lattice.
Keywords :
Thermal expansion coefficient , Perovskite oxide , lattice parameter
Journal title :
Advanced Ceramics Progress
Journal title :
Advanced Ceramics Progress
Record number :
2530781
Link To Document :
بازگشت