Nd–Mo-borosilicate glass–ceramic: Synthesis, characterization and response to ionizing radiation

Calcium borosilicate (CaO-B2O3-SiO2, CBS) glass based glass-ceramic composites were prepared by introducing borosilicate glass. The effects of borosilicate glass and firing temperature on the microstructure and properties of the glass-ceramic composites were investigated. The results showed that the composites containing 0~40% (in mass fraction, the same below) borosilicate glass can be sintered at 850°C. The dielectric constant (εr) decreases with the increase of borosilicate glass content and can be adjusted in the range of 5.6~6.6. The coefficient of thermal expansion (CTE) increases with the increase of borosilicate glass content. Increasing sintering temperature favors the precipitations of crystal phases, which have lower εr than CBS glass, resulting in the decrease of εr for the composites.

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Glass-Ceramic Composites from Borosilicate Glass and Alumina-Rich Residues

International Journal of Applied Ceramic Technology ◽

10.1111/ijac.12197 ◽

2013 ◽

Vol 12 ◽

pp. E19-E27 ◽

Cited By ~ 3

Author(s):

Rama Krishna Chinnam ◽

Aldo R. Boccaccini ◽

Enrico Bernardo ◽

Howard Epstein

Keyword(s):

Borosilicate Glass ◽

Glass Ceramic ◽

Ceramic Composites

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CaMOO4 in a Molybdenum Rich Borosilicate Glass-Ceramic: A Spectroscopic Study

Ceramic Transactions Series - Ceramics for Environmental and Energy Applications ◽

10.1002/9780470909874.ch6 ◽

2010 ◽

pp. 43-55 ◽

Cited By ~ 8

Author(s):

Clément Mendoza ◽

Gérard Panczer ◽

Dominique de Ligny ◽

Isabelle Bardez-Giboire ◽

Sophie Schuller ◽

...

Keyword(s):

Spectroscopic Study ◽

Borosilicate Glass ◽

Glass Ceramic

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Densification and Dielectric Properties of Glass/Ceramic Composites Sintered with Various Borosilicate Glass

Materials Science Forum - Eco-Materials Processing and Design VIII ◽

10.4028/0-87849-431-6.961 ◽

2007 ◽

pp. 961-964

Author(s):

Sang Ok Yoon ◽

Kwan Soo Kim ◽

Shin Kim ◽

Sang Heung Shim ◽

Jong Guk Park

Keyword(s):

Dielectric Properties ◽

Borosilicate Glass ◽

Glass Ceramic ◽

Ceramic Composites

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Barium (Zinc) Borosilicate Sealing Glass and Joining Interface with YSZ Electrolyte and Crofer22APU Interconnect in SOFCs

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.283.72 ◽

2018 ◽

Vol 283 ◽

pp. 72-77

Author(s):

Namthip Kingnoi ◽

Jiratchaya Ayawanna ◽

Nattapol Laorodphan

Keyword(s):

Borosilicate Glass ◽

Glass Ceramic ◽

Joint Interface ◽

Negative Effect ◽

Ceramic Electrolytes ◽

Formation Of Cracks ◽

Barium Borosilicate Glass ◽

Metallic Interconnects ◽

Ysz Electrolyte ◽

Zinc Borosilicate

This work describes the performance of two glass-ceramic compositions, BaO-SiO2-B2O3 (Barium borosilicate glass: BaBS) and BaO-ZnO-SiO2-B2O3 (Barium zinc borosilicate glass: BaBS−Zn), used for joining YSZ ceramic electrolytes and Crofer22APU metallic interconnects in solid oxide fuel cells (SOFCs) working at 800°C for 50 h. ZnO had a negative effect on the thermal expansion coefficient (TEC) value of the BaBS-Zn glass-ceramic. XRD and SEM results revealed the formation of rod-shaped barium zinc silicate crystalline phases in the BaBS-Zn glass, which was accompanied by cracks and poor adherence at the YSZ/BaBS-Zn joint interface after working at 800°C for 50 h. The formation of cracks parallel to the interface between the Crofer22APU interconnect and the BaBS-Zn glass-ceramic sealant was observed due to the severe TEC mismatch. The BaBS glass–ceramic adhered well to the YSZ electrolyte as well as the pre-oxidized Crofer22APU without cracks. Chromium oxide scale developed between the pre-oxidized Crofer22APU/BaBS glass-ceramic joint interface with increasing the pre-oxidation temperature. This study shows that BaBS glass-ceramic is more effective than BaBS-Zn as a sealant for joining YSZ electrolytes and Crofer22APU metallic interconnects in SOFCs working at 800°C for 50 h.

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