Zobrazeno 1 - 10
of 117
pro vyhledávání: '"Drago Kolar"'
Publikováno v:
Journal of the American Ceramic Society. 80:3145-3150
Incorporation of Nd into the BaCeO3 perovskite structure was studied by quantitative wavelength dispersive spectroscopy-electron probe microanalysis (WDS/EPMA) in combination with scanning electron microscopy (SEM) and X-ray powder diffractometry (XR
Publikováno v:
Journal of the American Ceramic Society. 84:1148-1154
La 1-y Sr y Fe 1-x Al x O 3-δ perovskites were studied as potential materials for solid-oxide fuel cell (SOFC) cathodes. The phase relations in the LaFeO 3 -SrFeO 3-δ -LaAlO 3 system were investigated by X-ray powder diffraction analysis. The defec
Publikováno v:
Journal of the European Ceramic Society. 21:2723-2730
Investigations of materials based on the three systems: (Ba 1– y Pb y ) 6– x La 8+2 x /3 Ti 18 O 54 , (Ba 1– y Pb y ) 6– x Nd 8+2 x /3 Ti 18 O 54 , and (Ba 1– y Ca y ) 6– x Ln 8+2 x /3 Ti 18 O 54 revealed that a partial isovalent substitu
Publikováno v:
Journal of the European Ceramic Society. 21:1817-1820
The chemical compatibility of a La 1– y Sr y Fe 1– x Al x O 3- δ cathode and an yttria-stabilised ZrO 2 electrolyte (YSZ) was studied for solid-oxide fuel cell (SOFC) applications. The Al addition to the LaFe 1– x Al x O 3 reduces the reactivi
Publikováno v:
Journal of the European Ceramic Society. 21:2117-2121
In polycrystalline materials we frequently observe exaggerated growth of some grains. One of the reasons for such growth irregularity, which we describe here, is the formation of polytypic sequences within the affected grains. We present an atomic-le
Publikováno v:
Journal of the American Ceramic Society. 83:3165-3171
The effects of adding small quantities of SnO2 to the basic ZnO–Bi2O3 varistor composition were studied in terms of phase reactions, microstructural development, and the formation of inversion boundaries. Scanning and transmission electron microsco
Publikováno v:
Materials Research Bulletin. 35:2525-2544
Subsolidus phase equilibrium of the LaMnO 3±δ –SrMnO 3−δ –LaAlO 3 system were studied in air at 1300°C. Based on experimental results obtained by powder X-ray diffraction (XRD) and energy-dispersive spectroscopy (EDS), four distinct areas w
Publikováno v:
Journal of Materials Research. 15:1735-1741
Investigations of a substitutional mechanism of Pb incorporation into the crystal structure of Ba6−3xNd8+2xTi18O54 performed by x-ray diffraction analysis, scanning electron microscopy, and energy dispersive and wavelength dispersive x-ray spectros
Publikováno v:
Journal of the European Ceramic Society. 20:1179-1185
XRD, electron probe wavelength and energy dispersive X-ray analyses were used to reexamine the phase relations in the La 2 O 3 –TiO 2 system. The diagram was redrawn to include the compound La 4 Ti 3 O 12 in addition to La 4 Ti 9 O 24 , La 2 Ti 2 O
Publikováno v:
Journal of Power Sources. 86:417-422
Lanthanum chromite-based materials have a good prospect for use in various high temperature applications, as well as an SOFC separator. A citrate–nitrate gel combustion reaction was used for the preparation of submicron crystalline strontium-substi