| abstract |
Has a firing step of firing the raw material powders, the formula: Si 6 - z Al z O z N 8 -z: A method for producing a β-type SiAlON represented by Eu, the raw material powder, the Al content is 0.3 ~ 1.2 mass% , O content 0.15-1 mass%, O / Al molar ratio 0.9-1.3, Si content 58-60 mass%, N content 37-40 mass%, N / Si molar ratio 1.25-1.45 and Eu content 0.3-0.7 mass% The firing step is a firing step of firing the raw material powder at a temperature range of 1850 to 2050 ° C. in the nitriding atmosphere, and the β-sialon produced shows 0.280 ≦ x ≦ 0.340 and 0.630 ≦ y ≦ 0.675 in CIExy chromaticity coordinates. . |