The compositions covered were (wt%) 18-23 B2O3, 28-45 CdO, 20-24 La2O3, 0-7 Ta2O3, 3-5 SiO2, 2-7 ZrO2, 2-6 TiO2, 2-4 WO3, (CdO + La2O3 + B2O3 = 90 max). RI ranged from 1.7928-1.8585. Melting was effected at 1200-1300 deg C and the annealing range was 610-540 deg C.
Origin
Unknown
Journal Title
Usp 2 967 779, 10/1/61
Sector
Refractive Indexes
Class
RI 43