| 摘要 |
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 1200C with sufficiently high thermal coefficient of linear expansion (TCLE) and having high heat stability of mechanical thermal and dielectric properties in the 20-1200C temperature range. ^ 2 tbl, 4 ex, 2 dwg |
