YAG phosphor doped with Yb (3+) for transparent ceramics was prepared by the co-precipitation method with urea used as precipitant. DTA-TG,XRD,SEM and IR spectrum analyzers were used to investigate the structure and m...YAG phosphor doped with Yb (3+) for transparent ceramics was prepared by the co-precipitation method with urea used as precipitant. DTA-TG,XRD,SEM and IR spectrum analyzers were used to investigate the structure and morphology of the precursor and the sintered poly-crystal. The results indicates that the weight loss is about 40% as the powder calcined at 1200 ℃,and well-crystallized YAG powder is obtained with particle size in the range of 100～150 nm. The SEM analysis of the fracture surface of the sintered body shows that the grain size is about 1～2 μm and the pore volume is very low. The ceramics body with favorite optical properties is obtained by sintering at 1700 ℃.展开更多
文摘YAG phosphor doped with Yb (3+) for transparent ceramics was prepared by the co-precipitation method with urea used as precipitant. DTA-TG,XRD,SEM and IR spectrum analyzers were used to investigate the structure and morphology of the precursor and the sintered poly-crystal. The results indicates that the weight loss is about 40% as the powder calcined at 1200 ℃,and well-crystallized YAG powder is obtained with particle size in the range of 100～150 nm. The SEM analysis of the fracture surface of the sintered body shows that the grain size is about 1～2 μm and the pore volume is very low. The ceramics body with favorite optical properties is obtained by sintering at 1700 ℃.
