摘要
介绍了国内夜光粉表面包覆技术的现状,并指出了引起夜光粉水解的原因,夜光粉SrAl2O4:Eu,Dy经包覆后在水中浸泡5天仍有1500 mcd/m2的初始亮度,未经处理的夜光粉几乎失去发光性能.经包覆处理后的夜光粉表面有一层连续致密的保护层,大大提高了它的化学稳定性和发光亮度,拓宽了夜光粉的应用领域.
The development of inorganic powder surface coating technology in Cnina was introduced in this paper. The reason that caused long afterglow phosphor to hydrolyze in the water were investigated. After soaking in water for 5 days the powser with surface coating still has initial brightness of 1500 mcd/m^2 while the powder without surface coating nearly loses the luminescent properties. A continuous and dense film has been formed on the powder surface. Chemical stability and brightness of long afterglow phosphor in water were enhanced by coating surface,which would develop application field of long afterglow phosphor.
出处
《材料研究与应用》
CAS
2007年第3期217-220,共4页
Materials Research and Application
关键词
夜光粉
稀土
表面包覆
水解
long afterglow phosphors
rare-earth
surface coating
hydrolyze
