Bonding frits for ceramic composites.

摘要

A sealing method and sealed assemblies incorporating novel devitrifiable sealing frits based on thermally crystallizable alkaline earth aluminosilicate glasses, are disclosed. The frits exhibit improved compatibility with refractory composites employed for the fabrication of high temperature fiber-reinforced glass-ceramic assemblies and can be cured at temperatures below those needed to cure prior art sealing compositions to provide strong seals wherein refractory crystal phases selected from the group consisting of anorthite (CaO.Al2O3.2SiO2), celsian (BaO.Al2O3.2SiO2), and sanidine, orthoclase or other potash feldspar (K2O.Al2O3.6SiO2) polymorphs constitute the principal phases.