Europium-doped strontium silicate red and orange fluorescent powder and preparation method thereof
A strontium silicate and fluorescent powder technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of reduced luminous efficiency, harsh reaction conditions, high sintering temperature, etc., and achieve low energy consumption, good crystallization performance, and high purity. Effect
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Embodiment 1
[0026] 1) Weigh the raw material SrCO with a stoichiometric ratio of 2.2:1:0.005 3 , SiO 2 and Eu 2 o 3 , put it in an agate mortar, fully grind it at room temperature for 1 hour, add an appropriate amount of ethanol solution to further grind it, and grind it until the raw materials are dry and mixed uniformly;
[0027] 2) Put the mixture obtained above in a crucible, then place the crucible in a high-temperature resistance furnace, heat it up to 950°C at a rate of 2°C / min from room temperature, keep it warm for 2h, and take it out after cooling to room temperature;
[0028] 3) Pour the calcined powder obtained in step 2 into an agate mortar, crush and grind for 20 minutes;
[0029] 4) Pour the above powder into a crucible, then place the crucible in a high-temperature resistance furnace, start from room temperature, heat it up to 950 °C at a rate of 6 °C / min, keep it for 4 hours, and take it out after cooling to room temperature;
[0030] 5) Pour the block powder obtained...
Embodiment 2
[0035] 1) Weigh the raw material SrCO with a stoichiometric ratio of 2:1:0.010 3 , SiO 2 and Eu 2 o 3 , put it in an agate mortar, fully grind it at room temperature for 1 hour, add an appropriate amount of ethanol solution to further grind it, and grind it until the raw materials are dry and mixed uniformly;
[0036] 2) Put the mixture obtained above in a crucible, then place the crucible in a high-temperature resistance furnace, heat it up to 950°C at a rate of 2°C / min from room temperature, keep it warm for 3 hours, and take it out after cooling to room temperature;
[0037] 3) Pour the calcined powder obtained in step 2 into an agate mortar, crush and grind for 30 minutes;
[0038]4) Pour the above powder into a crucible, then place the crucible in a high-temperature resistance furnace, start from room temperature, heat it up to 1050 °C at a rate of 6 °C / min, keep it warm for 5 hours, and take it out after cooling to room temperature;
[0039] 5) Pour the block powder ...
Embodiment 3
[0045] 1) Weigh the raw material SrCO with a stoichiometric ratio of 2.1:1:0.03 3 , SiO 2 and Eu 2 o 3 , and put it in an agate mortar, fully grind it at room temperature for 1 hour, add an appropriate amount of ethanol solution to further grind it, and grind it until the raw materials are dry and mixed uniformly;
[0046] 2) Put the mixture obtained above in a crucible, then place the crucible in a high-temperature resistance furnace, heat it up to 1050°C at a rate of 1°C / min from room temperature, keep it warm for 3 hours, and take it out after cooling to room temperature;
[0047] 3) Pour the calcined powder obtained in step 2 into an agate mortar, crush and grind for 30 minutes;
[0048] 4) Pour the above powder into a crucible, then place the crucible in a high-temperature resistance furnace, start from room temperature, heat it up to 1000 °C at a rate of 7 °C / min, keep it warm for 4 hours, and take it out after cooling to room temperature;
[0049] 5) Pour the block ...
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