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High refractive index silicate glass composition with reduced devitrification kinetics
High refractive index silicate glass composition with reduced devitrification kinetics
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机译：高折射率硅酸盐玻璃组合物，具有降低的缺失动力学
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摘要
A glass composition is provided. The glass composition comprises: 25-40 wt % SiO 2 ; 2.5-10 wt% B 2 O 3 ; 0-10 wt% Al 2 O 3 ; 0-15 wt % Li 2 O; 0-16 wt % Li 2 O, Na 2 O and K 2 O sum; 10-25 wt% CaO; 0-15 wt% BaO; 0-5 wt% MgO; 0-5 wt% SrO; 10-30 wt% CaO, BaO, MgO and SrO sum; 0-7 wt% ZnO; 2-10 wt% ZrO; 2-15 wt% TiO 2 ; 5-25 wt % Nb 2 O 5 ; 0-5 wt% Ta 2 O 5 ; 5-25 La 2 O 3 ; and 0-5 wt % Y 2 O 3 . The glass composition has a refractive index of about 1.74 to about 1.80, a density of about 3.5 g/cm 3 to about 4.0 g/cm 3 , a critical cooling rate of about 1° C./min to about 50° C./min, and a liquidus of greater than 25 poise. has a viscosity.
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机译：提供玻璃组合物。 玻璃组合物包含：25-40wt％SiO 2 ; 2.5-10wt％b 2 O 3 ; 0-10wt％Al 2 O 3 ; 0-15wt％li 2 o; 0-16wt％li 2 o，Na 2 o和k 2 O SUM; 10-25重量％CAO; 0-15重量宝; 0-5％wt％mgo; 0-5wt％sro; 10-30％wt％cao，bao，mgo和sro sum; 0-7wt％ZnO; 2-10％（重量）ZRO; 2-15重量％TiO 2 ; 5-25wt％Nb 2 O 5 ; 0-5wt％ta 2 O 5 ; 5-25 la 2 O 3 ; 和0-5wt％Y 2 O 3 。 玻璃组合物的折射率为约1.74至约1.80，密度为约3.5g / cm 3 约4.0g / cm 3 ，临界冷却速率 大约1℃/ min至约50℃/ min，液体大于25级。 粘度。
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