Rare-earth-ion-doped Sr2LuCl7 microcrystalline glass and preparation method thereof
A technology of glass-ceramics and rare earth ions is applied in the field of rare-earth ion-doped Sr2LuCl7 glass-ceramics and its preparation, which can solve the problems of difficulty in growing large-sized crystals, affecting practical applications, easy deliquescence of crystals, etc. Improved efficiency and good mechanical properties
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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 HCl 2 , Mix the raw materials evenly and pour them into a quartz crucible to melt, the melting temperature is 1410 ° C, keep warm for 2 hours, pour the glass melt into a cast iron mold, then place it in a muffle furnace for annealing, and keep it warm at the glass transition temperature Tg for 1 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; in the second step, according to the experimental data of thermal analysis (DTA) of the glass, the first crystallization temperature of 725 ℃, put the prepared glass...
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 HCl 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 1 hour 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; in the second step, according to the experimental data of thermal analysis (DTA) of the glass, the first crystallization temperature of 739 ℃, heat-treat the pre...
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 HCl 2 , Mix the raw materials evenly and pour them into a quartz crucible to melt. The melting temperature is 1430°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 753°C, and the prepared glass is placed in a nitrogen precision annealing furnace for heat treatment at 780°C for 5 hours, and then at 5°C / hour ...
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