Rare earth ion-doped ba2csi5 glass-ceramics and preparation method thereof
A technology of glass-ceramic and rare earth ions is applied in the field of rare-earth ion-doped Ba2CsI5 glass-ceramic and its preparation, which can solve the problems of difficult growth of large-sized crystals, poor mechanical properties, easy deliquescence of crystals, etc. Good mechanical properties and good permeability
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Embodiment 1
[0022] Embodiment 1: Table 1 shows the glass formula and the first crystallization temperature value of Embodiment 1.
[0023] Table 1
[0024]
[0025] 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 HI 2 , Mix the raw materials evenly and pour them into a corundum crucible for melting, the melting temperature is 1480°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; in the second step, according to the experimental data of thermal analysis (DTA) of the glass, the first crystallization temperature of 747 ℃, put the prepared glass ...
Embodiment 2
[0027] Embodiment 2: Table 2 shows the glass formula and the first crystallization temperature value of Embodiment 2.
[0028] Table 2
[0029]
[0030] 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 HI 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 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; in the second step, according to the experimental data of thermal analysis (DTA) of the glass, the first crystallization temperature of 743 ℃, put the prepared glass in a nitrogen precision annealing furnace for heat treatment at 760℃ for 6 hours, then cool down to 50℃ at a rate of 5℃ / hour, turn off the power of the pr...
Embodiment 3
[0032] Embodiment 3: Table 3 shows the glass formula and the first crystallization temperature value of Embodiment 3.
[0033] table 3
[0034]
[0035] 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 HI 2 , Mix the raw materials evenly and pour them into a quartz crucible to melt. The melting temperature is 1450°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 750°C, and the prepared glass is placed in a nitrogen precision annealing furnace at 790°C for 5 hours, and then heated at 5°C / hour The temperatu...
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