RADIOTRANSPARENT GLASS-CERAMIC MATERIAL FOR AIRCRAFT ENGINEERING Russian patent published in 2012 - IPC C03C10/14 

FIELD: chemistry.

SUBSTANCE: invention relates to glass-ceramic materials, particularly to high-temperature radiotransparent glass-ceramic materials meant for making aerospace and rocket equipment. The invention discloses compositions of glass-ceramic materials selected in a SiO₂-Al₂O₃-SrO-TiO₂ system, with the following ratio of components (wt %): Al₂O₃ - 30.0-32.0; SrO - 20.0-24.0; TiO₂ - 9.0-11.5; SiO₂ - the rest, with molar ratio SrO+TiO₂/Al₂O₃ equal to or less than 1. The phase composition of the material contains monoclinic strontium anortite and thialite.

EFFECT: disclosed compositions enable production of high-temperature radiotransparent glass-ceramic materials, having heat-resistance not lower than 1200°C with sufficiently high thermal coefficient of linear expansion (TCLE) and having high heat stability of mechanical thermal and dielectric properties in the 20-1200°C temperature range.

2 tbl, 4 ex, 2 dwg