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• W4281856482 abstract "The properties of BaO–CaO–Al2O3–SiO2 (BCAS) glass seal materials reinforced with 5–30 wt.% glass fiber are investigated. The seals are prepared by solid mixing process. The microstructure and phase content of the samples are studied. Mechanical properties are investigated by Vickers micro-hardness, nano-indentation and compression tests. The thermal properties of the samples are evaluated by conducting a dilatometry analysis. The electrical conductivity and leak resistance of the seal materials are measured at high temperatures. Increasing the amount of glass fiber in the composite samples decreases the magnitude of the thermal expansion coefficient. It is found the addition of just 5 wt.% of glass fiber (GF5sample) increases the indentation fracture toughness of the seals by ∼280% without impairing other properties. It is also found that the GF5 sample has high electrical resistivity with the activation energy of 63.7 kJ/mol and very low leak rate of 1.7 × 10−4 sccm/cm at 750 °C. Se investigan las propiedades del sello de vidrio BaO-CaO-Al2O3-SiO2 (BCAS) con el 5-30% en peso de fibra de vidrio. Los sellos se preparan mediante un proceso de mezcla sólida. Se estudia la microestructura y el contenido de fase de las muestras. Las propiedades mecánicas se investigan mediante ensayos de microdureza, nano indentación y compresión de Vickers. Las propiedades térmicas de las muestras se evalúan realizando el análisis de dilatometría. La conductividad eléctrica y la resistencia a fugas de los materiales del sello se miden a altas temperaturas. El aumento de la cantidad de fibra de vidrio en las muestras compuestas disminuye la magnitud del coeficiente de expansión térmica. Se encuentra que con la adición de solo el 5% en peso de fibra de vidrio (muestra GF5) aumenta la resistencia a la fractura por indentación de los sellos en ∼280%, sin afectar otras propiedades. También se encuentra que la muestra GF5 tiene alta resistividad eléctrica con energía de activación de 63.7 kJ/mol y una tasa de fuga muy baja de 1.7 × 10−4 sccm/cm a 750 °C." @default.
• W4281856482 created "2022-06-13" @default.
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• W4281856482 date "2023-07-01" @default.
• W4281856482 modified "2023-10-05" @default.
• W4281856482 title "Characterization of a barium–calcium–aluminosilicate glass/fiber glass composite seal for intermediate temperature solid oxide fuel cells" @default.
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• W4281856482 doi "https://doi.org/10.1016/j.bsecv.2022.05.001" @default.
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