| 摘要 |
<p>Amorphous glass contains (wt.%) 55-63.5 SiO2 4-10 Al2O3 and 0.1-3 MnO with the remainder CaO + Na2O + MgO + TiO2 to total 100%, and beyond this 0.5-8% F and 0.1-1% ZnO. Specif., the ranges are 59-63.5 SiO2, 6-8.5 Al2O3, and 0.1-1.5 MnO, with 22.2-26.9 CaO, 4.8-5.2 Na2O, 0,1-2,5 MgO and 0.1-1.15 TiO2, plus again 0.1-1.2 Fe2O3 to total 100%, and beyond this 0.5-7.2% F and 0.1-0.5% ZnO.</p> |
