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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fluoride-based yellow complex-phase fluorescent ceramic for white light LEDs and rapid sintering process thereof
The invention discloses fluoride-based yellow complex-phase fluorescent ceramic for white light LEDs and a rapid sintering process thereof. The fluoride-based yellow complex-phase fluorescent ceramiccomprises fluoride powder, YAG: Ce fluorescent powder and a sintering aid; the mass ratio of YAG: Ce powder to the fluoride powder is (0.5-10): (90-99.5), the content of the sintering aid accounts for0.5-3% of the total weight, and the fluorescent ceramic emits yellow light of 560 +/-2 nm under the excitation of blue light. A preparation method comprises following steps: weighing the three components, uniformly mixing, and filling an obtained mixture into a graphite grinding tool; introducing the graphite grinding tool in a discharge plasma sintering furnace, and carrying out ceramic sintering by adjusting sintering parameters; and removing the pressure, and naturally cooling to room temperature so as to obtain a finished product. The prepared fluorescent ceramic is composed of the fluoride and YAG: Ce two phases, is good in crystallinity, can emit yellow light of 560 +/-2 nm under blue light excitation, is high in luminous efficiency and good in thermal stability, does not exceed 1 hin the whole sintering process, and is small in energy consumption required by sintering and low in cost.
本发明公开了一种白光LED用氟化物基黄色复相荧光陶瓷及其快速烧结工艺，包括氟化物粉体、YAG:Ce荧光粉体与烧结助剂，所述YAG:Ce粉体与氟化物粉体的质量比为0.5～10：90～99.5，烧结助剂的含量为总重量的0.5～3%，所述荧光陶瓷在蓝光激发下，发射出560±2 nm的黄光。称取三个组分后混合均匀，填入石墨磨具中；将石墨磨具置于放电等离子体烧结炉，通过调节烧结参数，完成陶瓷烧结；撤去压力后自然冷却至室温，即可。本发明制得的荧光陶瓷由氟化物、YAG:Ce两相构成，结晶度好，在蓝光激发下发射出560±2 nm的黄光，发光效率高，热稳定性好，整个烧结过程不超过1h，烧结所需能耗小，成本低。
Fluoride-based yellow complex-phase fluorescent ceramic for white light LEDs and rapid sintering process thereof
The invention discloses fluoride-based yellow complex-phase fluorescent ceramic for white light LEDs and a rapid sintering process thereof. The fluoride-based yellow complex-phase fluorescent ceramiccomprises fluoride powder, YAG: Ce fluorescent powder and a sintering aid; the mass ratio of YAG: Ce powder to the fluoride powder is (0.5-10): (90-99.5), the content of the sintering aid accounts for0.5-3% of the total weight, and the fluorescent ceramic emits yellow light of 560 +/-2 nm under the excitation of blue light. A preparation method comprises following steps: weighing the three components, uniformly mixing, and filling an obtained mixture into a graphite grinding tool; introducing the graphite grinding tool in a discharge plasma sintering furnace, and carrying out ceramic sintering by adjusting sintering parameters; and removing the pressure, and naturally cooling to room temperature so as to obtain a finished product. The prepared fluorescent ceramic is composed of the fluoride and YAG: Ce two phases, is good in crystallinity, can emit yellow light of 560 +/-2 nm under blue light excitation, is high in luminous efficiency and good in thermal stability, does not exceed 1 hin the whole sintering process, and is small in energy consumption required by sintering and low in cost.
本发明公开了一种白光LED用氟化物基黄色复相荧光陶瓷及其快速烧结工艺，包括氟化物粉体、YAG:Ce荧光粉体与烧结助剂，所述YAG:Ce粉体与氟化物粉体的质量比为0.5～10：90～99.5，烧结助剂的含量为总重量的0.5～3%，所述荧光陶瓷在蓝光激发下，发射出560±2 nm的黄光。称取三个组分后混合均匀，填入石墨磨具中；将石墨磨具置于放电等离子体烧结炉，通过调节烧结参数，完成陶瓷烧结；撤去压力后自然冷却至室温，即可。本发明制得的荧光陶瓷由氟化物、YAG:Ce两相构成，结晶度好，在蓝光激发下发射出560±2 nm的黄光，发光效率高，热稳定性好，整个烧结过程不超过1h，烧结所需能耗小，成本低。
Fluoride-based yellow complex-phase fluorescent ceramic for white light LEDs and rapid sintering process thereof
白光LED用氟化物基黄色复相荧光陶瓷及其快速烧结工艺
WANG XIAOJUN (Autor:in) / GU CHI (Autor:in) / ZHANG CHANGHUA (Autor:in)
10.04.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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