| 摘要 |
FIELD: glass industry. ^ SUBSTANCE: invention relates to compositions of glass-like covers used for applying on articles made of ceramics, glass and metal. Proposed glass-like cover comprises SiO2, Al2O3, B2O3, K2O, Na2O, CaO and, additionally, PbO and CuO in the following ratio of components, wt.-%: SiO2, 20.0-26.0; Al2O3, 4.0-10.0; B2O3, 40.0-46.0; K2O, 4.0-10.0; Na2O, 2.0-4.0; CaO, 4.0-10.0; PbO, 4.0-10.0, and CuO, 2.0-4.0. Invention provides increasing value of the thermal linear expansion coefficient of glass-like cover. ^ EFFECT: improved and valuable property of glass-cover. ^ 1 tbl |
