Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Preparation method of zero-temperature quenched green luminescent fluorescent ceramic
The invention provides a preparation method of zero-temperature quenched green luminescent fluorescent ceramic. The chemical formula of the fluorescent material is MgMn<1-x>Al2O4, and x is greaterthan or equal to 0.0001 and less than or equal to 0.5. The preparation method of the fluorescent ceramic material comprises the following steps: proportioning magnesium oxide, aluminum oxide and manganese dioxide according to the chemical formula MgMn<1-x>Al2O4, and synthesizing the prepared powder into the fluorescent ceramic with a cubic spinel phase through a discharge plasma sintering or hot pressing sintering technology. Mn<2+> is diffused into the spinel structure in the high-temperature sintering process to replace Mg<2+> ions in the existing tetrahedral structure to serve as a light-emitting center, and the zero-temperature quenched green luminescent fluorescent ceramic is obtained. Under the excitation of ultraviolet-blue-violet light, green fluorescence with narrow bandwidth is emitted; the fluorescence peak intensity can be adjusted by the concentration of doped Mn<2+>, the thermal performance of the material is excellent, the intensity of green fluorescence emitted by the material under excitation in a high-temperature environment is not obviously attenuated, and the material is green luminescent fluorescent ceramic with zero-temperature quenching.
本发明提供了一种零温度淬灭绿色发光荧光陶瓷的制备方法,该荧光材料的化学式为MgxMn1‑xAl2O4，其中：0.0001≤x≤0.5。上述荧光陶瓷材料的制备方法为：将氧化镁，氧化铝和二氧化锰原料按照化学式MgxMn1‑xAl2O4进行配比，将配好的粉体通过放电等离子体烧结或热压烧结技术合成具有立方尖晶石物相的荧光陶瓷，在高温烧结过程中Mn2+扩散进入尖晶石结构中，替换已存在四面体结构中的Mg2+离子成为发光中心，得到零温度淬灭绿色发光荧光陶瓷。本发明在紫外～蓝紫光激发下具有窄带宽的绿色荧光发出，荧光峰值强度可以通过掺杂Mn2+的浓度进行调节，且本发明材料的热性能极佳，在高温环境下材料受激发而发出的绿色荧光强度也没有很明显的衰减，是一种具有零温度淬灭的绿色发光荧光陶瓷。
Preparation method of zero-temperature quenched green luminescent fluorescent ceramic
The invention provides a preparation method of zero-temperature quenched green luminescent fluorescent ceramic. The chemical formula of the fluorescent material is MgMn<1-x>Al2O4, and x is greaterthan or equal to 0.0001 and less than or equal to 0.5. The preparation method of the fluorescent ceramic material comprises the following steps: proportioning magnesium oxide, aluminum oxide and manganese dioxide according to the chemical formula MgMn<1-x>Al2O4, and synthesizing the prepared powder into the fluorescent ceramic with a cubic spinel phase through a discharge plasma sintering or hot pressing sintering technology. Mn<2+> is diffused into the spinel structure in the high-temperature sintering process to replace Mg<2+> ions in the existing tetrahedral structure to serve as a light-emitting center, and the zero-temperature quenched green luminescent fluorescent ceramic is obtained. Under the excitation of ultraviolet-blue-violet light, green fluorescence with narrow bandwidth is emitted; the fluorescence peak intensity can be adjusted by the concentration of doped Mn<2+>, the thermal performance of the material is excellent, the intensity of green fluorescence emitted by the material under excitation in a high-temperature environment is not obviously attenuated, and the material is green luminescent fluorescent ceramic with zero-temperature quenching.
本发明提供了一种零温度淬灭绿色发光荧光陶瓷的制备方法,该荧光材料的化学式为MgxMn1‑xAl2O4，其中：0.0001≤x≤0.5。上述荧光陶瓷材料的制备方法为：将氧化镁，氧化铝和二氧化锰原料按照化学式MgxMn1‑xAl2O4进行配比，将配好的粉体通过放电等离子体烧结或热压烧结技术合成具有立方尖晶石物相的荧光陶瓷，在高温烧结过程中Mn2+扩散进入尖晶石结构中，替换已存在四面体结构中的Mg2+离子成为发光中心，得到零温度淬灭绿色发光荧光陶瓷。本发明在紫外～蓝紫光激发下具有窄带宽的绿色荧光发出，荧光峰值强度可以通过掺杂Mn2+的浓度进行调节，且本发明材料的热性能极佳，在高温环境下材料受激发而发出的绿色荧光强度也没有很明显的衰减，是一种具有零温度淬灭的绿色发光荧光陶瓷。
Preparation method of zero-temperature quenched green luminescent fluorescent ceramic
一种零温度淬灭绿色发光荧光陶瓷的制备方法
LIN HUI (Autor:in) / DUAN YUTONG (Autor:in) / JIANG SHUNPAN (Autor:in) / HU JIAN (Autor:in) / ZHOU JI (Autor:in)
13.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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