| When the ratio of Al to Sr is changed, the composition of phase, luminesent property and hydrolytic stability of the product are changed in the synthesis of europium-activated strontium aluminate. When the ratio of Al to Sr is 1.5, the main phase is Sr4Al4O2(Al10O23), the phase of SrAl2O4 content is also high. SrAl2O4 inclines hydrolyzing, so it has weaker hydrolytic stability. When the ratio of Al to Sr is increased, the phase of SrAl2O4 content is decreased, so its hydrolytic stability is improved. |