| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: crystal glass contains, wt %: SiO2 48.0-53.0; PbO 20.0-25.0; K2O 10.0-15.0; Na2O 3.0-5.0; ZnO 1.0-2.0; B2O3 1.0-2.0; CaO 1.0-2.0; CeO2 0.2-0.4; As2O3 0.2-0.4; NiO 0.2-0.4; BaO 3.0-5.0; Sb2O3 1.0-2.0. Glass refraction index is 1.90-1.95. ^ EFFECT: increase of glass refraction index. ^ 1 tbl |
