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
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