Characterization of a barium–calcium–aluminosilicate glass/fiber glass composite seal for intermediate temperature solid oxide fuel cells

IF 2.7 4区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS Boletin de la Sociedad Espanola de Ceramica y Vidrio Pub Date : 2023-07-01 DOI:10.1016/j.bsecv.2022.05.001
Peyman Safarzadeh Kermani , Mojtaba Ghatee , John Thomas Sirr Irvine
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引用次数: 1

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.

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中温固体氧化物燃料电池用钡钙铝硅酸盐玻璃/玻璃纤维复合密封件的表征
研究了5-30 wt.%玻璃纤维增强宝草al2o3 - sio2 (BCAS)玻璃密封材料的性能。密封件采用固体混合工艺制备。研究了试样的显微组织和相含量。通过维氏显微硬度、纳米压痕和压缩试验研究了材料的力学性能。通过进行膨胀分析来评价样品的热性能。在高温下测量密封材料的电导率和防泄漏性能。复合材料中玻璃纤维含量的增加使热膨胀系数的大小减小。研究发现,仅添加5wt .%的玻璃纤维(gf5样品),可使密封件的压痕断裂韧性提高约280%,而不会损害其他性能。在750℃下,GF5样品具有较高的电阻率,活化能为63.7 kJ/mol,漏率为1.7 × 10−4 sccm/cm。
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来源期刊
Boletin de la Sociedad Espanola de Ceramica y Vidrio
Boletin de la Sociedad Espanola de Ceramica y Vidrio 工程技术-材料科学:硅酸盐
CiteScore
5.50
自引率
2.90%
发文量
72
审稿时长
103 days
期刊介绍: The Journal of the Spanish Ceramic and Glass Society publishes scientific articles and communications describing original research and reviews relating to ceramic materials and glasses. The main interests are on novel generic science and technology establishing the relationships between synthesis, processing microstructure and properties of materials. Papers may deal with ceramics and glasses included in any of the conventional categories: structural, functional, traditional, composites and cultural heritage. The main objective of the Journal of the Spanish Ceramic and Glass Society is to sustain a high standard research quality by means of appropriate reviewing procedures.
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