Abstract
Barium silicates have been investigated as high-expansion components of solid oxide fuel cells (SOFCs) and, therefore, their synthesis and expansion have been the subject of intensive research in recent years. In this article, we briefly present a new process to make glass–crystalline composites, as well as two novel findings related to a synthesis route of sanbornite (BaSi2O5) and the fast in situ formation of a high-expansion sanbornite composite from a Pyrex-type glass powder. The low-temperature synthesis, composition, and expansion of one type of novel glass composite are described. The composites are made by the reaction of BaCO3 and Pyrex-type powders at 850–950 °C for a short time of one hour. The composites are well sintered and hard, and their linear coefficient of thermal expansion is about 12.3 × 10−6 C−1. The crystalline-phase formation, dilatometer measurements, SEM data, and possible applications of the composites are presented and discussed.
Original language | English |
---|---|
Pages (from-to) | 1994-2005 |
Number of pages | 12 |
Journal | Ceramics |
Volume | 7 |
Issue number | 4 |
DOIs | |
State | Published - 1 Dec 2024 |
Keywords
- glass-composites
- pyrex glass
- sanbornite
- synthesis
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Science (miscellaneous)