Rare-earth-ion-doped LiGdI4 microcrystalline glass and preparation method thereof
A technology of glass-ceramic and rare-earth ions is applied in the field of rare-earth ion-doped LiGdI4 glass-ceramic and its preparation. Low production cost and good mechanical properties
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[0021] Example 1: Table 1 shows the glass formulation and the first crystallization temperature value of Example 1.
[0022] Table 1
[0023]
[0024] The specific preparation process is as follows: the first step, according to the formula in Table 1, weigh 50 grams of analytically pure raw materials, 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 for melting, the melting temperature is 800 ℃, and the temperature is kept for 2 hours. After an hour, 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 experimental data of thermal analysis (DTA) of the glass, the first crystallization temperature was obtained 445 ℃, the prepared glass was placed in a nitrogen precision annealing furnace for heat treatment at 470 ℃ for 6 ho...
Example Embodiment
[0026] Example 2: Table 2 shows the glass formulation and the first crystallization temperature value of Example 2.
[0027] Table 2
[0028]
[0029] The specific preparation process is as follows: the first step, according to the formula in Table 2, weigh 50 grams of analytically pure raw materials, 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 850 ° C, and the temperature is kept for 1 hour. The glass melt is poured into the cast iron mold, and then placed in a muffle furnace for annealing, and the temperature is kept at the glass transition temperature Tg for 1 After one hour, 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 experimental data of thermal analysis (DTA) of t...
Example Embodiment
[0031] Example 3: Table 3 shows the glass formulation and the first crystallization temperature value of Example 3.
[0032] table 3
[0033]
[0034] The specific preparation process is as follows: the first step, according to the formula in Table 3, weigh 50 grams of analytically pure raw materials, add 2.5 grams of NH 4 HF 2 , 2.5 g NH 4 HI 2 , after mixing the raw materials evenly, pour it into a quartz crucible for melting, the melting temperature is 900 ° C, and the temperature is kept for 1.5 hours. The glass melt is poured into a cast iron mold, and then placed in a muffle furnace for annealing. After an hour, 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 thermal analysis (DTA) experimental data of the glass, the first crystallization temperature of 453°C was obtained, a...
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