采用高温固相法合成了由Ca-α-SiAlON:Eu2+(α相)和β-SiAlON:Eu2+(β相)两相组成的Ca0 25-xSi9.9 Al2.1O16 N14.4:xEu2+系列荧光粉,研究了Eu掺杂浓度及烧结条件对其物相组成及发光性能的影响.结果表明,在0.5 MPa氮气气氛下,1700℃保温1h的产物中α相质量分数随x值增大先减小后增大,于x =0.025时达到最小值27.0％；产物中α相含量随烧结温度升高而增大,在1900℃时达到55.2％.此体系荧光粉的激发和发射强度与α相含量成正比例关系,且发射峰位置随α相含量增多发生红移.
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