Babr2 glass ceramics doped with rare earth ions and preparation method thereof
A technology of glass-ceramics and rare earth ions, which is applied in the field of BaBr2 glass-ceramics doped with rare earth ions and its preparation, can solve the problems of difficulty in growing large-sized crystals, easy deliquescence of crystals, poor mechanical properties, etc., and achieve superior scintillation performance, Good mechanical properties and low production cost
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Embodiment 1
[0023] Embodiment 1: Table 1 shows the glass formula and the first crystallization temperature value of Embodiment 1.
[0024] Table 1
[0025]
[0026] The specific preparation process is as follows: in the first step, weigh 50 grams of analytically pure raw materials according to the formula in Table 1, add 2.5 grams of NH 4 HF 2 , 2.5 g NH 4 HBr 2 , Mix the raw materials evenly and pour them into a corundum crucible for melting, the melting temperature is 1450°C, keep warm for 1 hour, pour the glass melt into a cast iron mold, then place it in a muffle furnace for annealing, and keep warm at the glass transition temperature Tg for 2 Hours later, cool down to 50°C at a rate of 10°C / hour, turn off the power supply of the muffle furnace to automatically cool down to room temperature, and take out the glass; the second step, according to the glass thermal analysis (DTA) experimental data, obtain the first crystallization temperature 710 ℃, heat-treat the prepared glass i...
Embodiment 2
[0028] Embodiment 2: Table 2 shows the glass formula and the first crystallization temperature value of Embodiment 2.
[0029] Table 2
[0030]
[0031] The specific preparation process is as follows: in the first step, weigh 50 grams of analytically pure raw materials according to the formula in Table 2, add 2.5 grams of NH 4 HF 2 , 2.5 g NH 4 HBr 2 , Mix the raw materials evenly and pour them into a quartz crucible to melt. The melting temperature is 1300°C and keep warm for 2 hours. Hours later, cool down to 50°C at a rate of 10°C / hour, turn off the power supply of the muffle furnace to automatically cool down to room temperature, and take out the glass; the second step, according to the glass thermal analysis (DTA) experimental data, obtain the first crystallization temperature 703 ℃, put the prepared glass in a nitrogen precision annealing furnace at 723℃ for 6 hours, then cool down to 50℃ at a rate of 5℃ / hour, turn off the power of the precision annealing furnace ...
Embodiment 3
[0033] Embodiment 3: Table 3 shows the glass formula and the first crystallization temperature value of Embodiment 3.
[0034] table 3
[0035]
[0036] The specific preparation process is as follows: in the first step, weigh 50 grams of analytically pure raw materials according to the formula in Table 3, add 2.5 grams of NH 4 HF 2 , 2.5 g NH 4 HBr 2 , Mix the raw materials evenly and pour them into a quartz crucible to melt. The melting temperature is 1400°C and keep warm for 1.5 hours. Hours later, the temperature was lowered to 50° C. at a rate of 10° C. / hour, the power of the muffle furnace was turned off and the temperature was automatically lowered to room temperature, and the glass was taken out. In the second step, according to the glass thermal analysis (DTA) experimental data, the first crystallization temperature is 715°C, and the prepared glass is placed in a nitrogen precision annealing furnace for heat treatment at 754°C for 5 hours, and then at 5°C / hour ...
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