Preparation method of Al2O3-YAG: Ce complex-phase powder and complex-phase fluorescent ceramic

• Main Authors: WANG YANBIN, HUANG XINYOU, DAI ZHENGFA, YUAN QIANG, CHENG ZIQIU, LI JIANG, CHEN PENGHUI
• Format: Patent
• Language: Chinese; English
• Published: 26.05.2023
• Subjects: ADHESIVES; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DYES; LIME, MAGNESIA; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention provides a preparation method of Al2O3-YAG: Ce complex-phase powder and complex-phase fluorescent ceramic. The preparation method comprises the following steps: controlling Al < 3 + > in (Ce, Y) 3Al5O12 to be excessive to obtain an Al2O3-(Ce, Y) 3Al5O12 complex phase; the molar weights of Al < 3 + >, Ce < 3 + > and Y < 3 + > are calculated through the chemical formula of x wt.% Al2O3-(Y1-yCey) 3Al5O12, x is larger than or equal to 10 and smaller than or equal to 90, y is larger than or equal to 0.0005 and smaller than or equal to 0.05, and a mixed ion precipitation solution of Al < 3 + >, Ce < 3 + > and Y < 3 + > is obtained through a coprecipitation method; washing, drying, sieving and calcining the precipitation solution to obtain Al2O3-YAG: Ce complex phase powder; and preparing the multiphase powder into a ceramic biscuit, and performing vacuum sintering to obtain the multiphase fluorescent ceramic. According to the technical scheme, the nano powder with high purity and high component unifor