Tellurite And Fluorotellurite Glasses For Active And Passive

3. Glass batching and melting; MDO 76
the duration of melting depended on the size of the batch to ensure complete melting,
homogenisation, and sufficient drying occurred (see table (3.6)).
Table (3.5): Melting details for oxide tellurite glasses melted in this study.
Stage 1 1 Stage 2 2
MOD
ID Temp. Time
/ °C / hr.
Temp. Time
/ °C / hr.
Weight
/ g
Mould3
Wt. %
VolatilisationCrystallisation
T08 830 1.0 250 1.0 10 LB - N
ST08 830 1.0 250 1.0 10 LB - N
001 830 1.0 250 1.0 10 LB - Y
002 830 1.0 250 1.0 10 LB 0.26 N 1
003 830 1.0 250 1.0 10 LB 0.24 N 4
004 830 1.0 250 1.0 10 SA 0.18 N
005 830 1.0 250 1.0 10 SA 0.58 Y
006 800 1.0 250 1.0 10 SA - N
007 800 1.0 250 1.0 10 SA - N
008 800 1.0 250 1.0 10 SA 0.52 N
009 800 1.0 250 1.0 10 SA 0.24 N
010i 800 2.0 250 1.0 30 CB 0.16 N
010ii 800 1.0 250 1.0 10 SA 0.25 N
011 800 1.0 250 1.0 10 SA 0.08 N 1
012 800 1.0 250 1.0 10 SA 0.91 N
013 800 1.0 250 1.0 10 SA 0.43 N
014i 850 1.0 320 1.0 10 SA 0.20 N
014ii 850 1.0 335 1.0 18 LB 0.07 N
015 850 1.0 320 1.0 10 SA 0.15 N
016 820 1.0 350 1.0 10 SA 0.06 N
1 Stage 1 was the melting stage
2 Stage 2 was the annealing stage
3 LB = large brass, SA = small aluminium, CB = cylindrical brass
4 Partial