摘要：采用非均相成核法对BaAl₁₂O₁₉ : Mn²⁺绿粉进行Al2O3表面包覆研究,当pH=5.0,包覆剂用量为1.0%～1.5%时,制备得到了包覆层连续均匀的γ-Al₂O₃包覆型BaAl₁₂O₁₉ : Mn²⁺包覆型荧光粉。热劣化结果表明,BaAl₁₂O₁₉ : Mn²⁺绿粉经Al2O3包膜处理后,抗热劣化性能得到了明显改善。

关键词：BaAl₁₂O₁₉ : Mn²⁺粉体；包覆型荧光粉；抗热劣化

Abstract: The BaAl₁₂O₁₉ : Mn²⁺green phosphor was encapsulated with heterogeneous nucleation process. A uniform continuous γ- Al₂O₃ coating film was obtained upon the surface of BaAl₁₂O₁₉ : Mn²⁺ green phosphor when pH was 5.0 and coating quantity was 1.0%～1.5%. The thermal degradation results indicated that the γ- Al₂O₃ coating film obviously enhanced the anti-thermal degradation property. 

Keywords: BaAl₁₂O₁₉ : Mn²⁺ powder; encapsulated phosphor; anti-therm aldegradation