BLACK GLASS Russian patent published in 1994 - IPC

Abstract RU 2016858 C1

FIELD: glass industry. SUBSTANCE: black glass has, wt.-%: silicon oxide (SiO₂) 65.93-67.24; aluminium oxide (Al₂O₃) 0.92-0.96; ferric oxide (Fe₂O₃) 1.95-3.29; calcium oxide (CaO) 8.51-8.88; barium oxide (BaO) 2.31-2.38; potassium oxide (K₂O) 2.95-3.04; sodium oxide (Na₂O) 13.97-16.0; arsenic oxide (As₂O₃) 0.28-0.29; antimony oxide (Sb₂O₃) 0.28-0.29; sulfur (S^2-) 0.25-0.38. Temperature coefficient of linear expansion (TCLE) of glass is (103,2-105)·10^-7 C, microhardness is 720-740 kg/mm². Glass is founded in electric furnace. Glass is used for facing material production. EFFECT: enhanced quality of glass. 3 tbl

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RU 2 016 858 C1

Authors

Sinevich A.K.

Fijas' A.V.

Dates

1994-07-30—Published

1991-06-24—Filed