2016 年 124 巻 9 号 p. 950-953
Blue fluorescence phosphor ZrO2:Ti, P/Al2O3 composite bodies were fabricated by sintering {ZrO2 + 1000 ppm Ti + 4000 ppm P} powder, which had been heat-treated at 1500°C, and α-Al2O3 powder at 1500°C. No cracks were observed on the fabricated blue fluorescent ZrO2:Ti, P/10, 30, 50, and 70 wt%–Al2O3 composite sintered bodies. The fluorescence intensities of the ZrO2:Ti, P/10, 30, 50, and 70 wt%–Al2O3 composite sintered bodies were 77, 82, 85 and 82% that of the ZrO2:Ti, P blue phosphor powder, respectively. The internal quantum efficiency of the blue fluorescent ZrO2:Ti, P/50 wt%–Al2O3 composite bodies was 57% when excited at 280 nm.
