| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention pertains to the technology of silicates, in particular, to glass compounds which can be used, preferably, for making graded vessels. The crystal glass consists of the following components with the given percentage mass ratios: SiO2 49.0-54.0; B2O3 9.0-12.0; CaO 1.0-2.0; Al2O3 1.5-2.5; ZnO 2.0-4.0; PbO 7.0-9.0; Na2O 0.5-1.0; K2O 3.0-4.5; MgO 9.0-12.0; BaO 3.5-5.0; ZrO2 3.5-5.0. ^ EFFECT: increased thermal stability of glass. ^ 1 tbl |
