Thermal and mechanical properties of LaCoO3 and La0.8Ca0.2CoO3 perovskites

Thermal behaviour of La0.8Sr0.2Fe1−xGaxO3−δ (x=0 or x=0.3)

“…In this way, Fossdal et al and Orlovskaya et al have shown that LaFeO 3 , 35 LaCoO 3 and La 0.8 Ca 0.2 CoO 3 perovskites 36,37 present a ferroelastic behaviour with orthorhombic-rhombohedral phase transition. Besides, Young's modulus evolution of LSFG8273 and LSF821 perovskites with temperature between 25 • C and 600 • C is similar to Young's modulus evolution of LaCoO 3 perovskites presented by Orlovskaya et al 36,37 The ferroelastic behaviour of LSFG8273 and LSF821 perovskites could be expected above the orthorhombic-to-rhombohedral phase transition described in this study by analogy with LaCoO 3 and La 0.8 Ca 0.2 CoO 3 perovskites. However, this ferroelastic behaviour does not explain clearly the increase of Young's modulus with temperature between 400 • C and 600 • C, and leads to a nonlinear stress-strain relationship which should be confirmed by a complementary microstructural analysis and mechanical tests in further studies, such as bending or compressive tests.…”

SrCo1−xSbxO3−δ perovskite oxides as cathode materials in solid oxide fuel cells

“…The thermal expansion coefficients obtained for the SrCo 1−x Sb x O 3−ı system (Table 1) are considerably high for SOFC applications but they are in the range of those presented by other Co-containing perovskite like materials [19][20][21].…”

Ferroelastic deformation of La0.58Sr0.4Co0.2Fe0.8O3−δ under uniaxial compressive loading

“…3,[6][7][8] Despite numerous studies on electrochemical properties, there are few investigations on mechanical properties. [9][10][11][12][13][14][15] The mechanical properties such as elastic modulus and fracture properties have been investigated by means of resonance method and * Corresponding author. Tel.…”