Rare-earth-ion-doped CaI2 microcrystalline glass and preparation method thereof
A technology of glass-ceramics and rare-earth ions, which is applied in rare-earth ion-doped CaI2 glass-ceramics and its preparation field, can solve problems such as difficulty in growing large-sized crystals, poor mechanical properties, and easy deliquescence of crystals, and achieve superior scintillation performance, Good mechanical properties and good permeability
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[0022] Example 1: Table 1 shows the glass formula of Example 1 and the first crystallization temperature value.
[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, and add 2.5 grams of NH 4 HF 2 , 2.5 grams of NH 4 HI 2 , After mixing the raw materials evenly, pour them into a corundum crucible and melt them at a melting temperature of 1450°C. Keep holding for 1 hour. Pour the glass melt into a cast iron mold, then place it in a muffle furnace for annealing, and keep it at the glass transition temperature Tg 2 After hours, the temperature is reduced to 50°C at a rate of 10°C / hour, the muffle furnace is turned off and the temperature is automatically reduced to room temperature, and the glass is taken out; in the second step, according to the thermal analysis (DTA) experimental data of the glass, the first crystallization temperature is 737 ℃, put ...
Example Embodiment
[0027] Example 2: Table 2 shows the glass formula of Example 2 and the first crystallization temperature value.
[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, and add 2.5 grams of NH 4 HF 2 , 2.5 grams of NH 4 HI 2 , After mixing the raw materials evenly, pour them into a quartz crucible and melt them at a melting temperature of 1350°C. Keep holding for 2 hours. Pour the glass melt into a cast iron mold, then put it in a muffle furnace for annealing, and keep it at the glass transition temperature Tg. After hours, the temperature is reduced to 50°C at a rate of 10°C / hour, the muffle furnace is turned off and the temperature is automatically cooled to room temperature, and the glass is taken out; the second step, according to the thermal analysis (DTA) experimental data of the glass, the first crystallization temperature 731 is obtained ℃, put...
Example Embodiment
[0032] Example 3: Table 3 shows the glass formula and the first crystallization temperature value of Example 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, and add 2.5 grams of NH 4 HF 2 , 2.5 grams of NH 4 HI 2 , After mixing the raw materials evenly, pour them into a quartz crucible and melt them at a melting temperature of 1400°C and hold for 1.5 hours. Pour the glass melt into a cast iron mold, then place it in a muffle furnace for annealing, and keep it at the glass transition temperature Tg 2 After hours, the temperature is lowered to 50°C at a rate of 10°C / hour, the muffle furnace is turned off and the temperature is automatically lowered to room temperature, and the glass is taken out. In the second step, according to the thermal analysis (DTA) experimental data of the glass, the first crystallization temperature is 742℃. The glass...
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