Abstract
Barium aluminosilicate (BAS) glass-ceramics were prepared by hot-pressing BAS glass powder derived via the sol–gel method, and the microstructure and properties were studied. Through control of composition, BAS glass-ceramics with two different types of microstructure were obtained. One is a sub-micrometre celsian surrounded by a thin layer of glassy phase, and the other is a celsian–mullite composite microstructure. BAS glass-ceramics with the celsian–mullite composite microstructure have a strength of 204 MPa and a creep rate of ≤ 1.03 × 10-4 h-1 at 1250 °C. After heat treatment at 1250 °C for 100 h, no significant change of the microstructure was found, and the high-temperature strength did not decrease greatly. The BAS glass-ceramics prove to be a potentially good matrix for fibre- or whisker-reinforced composites for high-temperature applications.
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Zhou, W., Zhang, L. & Yang, J. Preparation and properties of barium aluminosilicate glass-ceramics. Journal of Materials Science 32, 4833–4836 (1997). https://doi.org/10.1023/A:1018699418458
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DOI: https://doi.org/10.1023/A:1018699418458