Preparation of Incompact Strontium Aluminate Phosphors

【Author】

Luo Xixian, Xiao Zhiguo,Xia Wei,Cao Wanghe (Photoelectron Technology Institute,Dalian Maritime University,Dalian 116026,China;Dalian Luming Light Science & Technology Co. ,Ltd. , Dalian 116025, China)

【Abstract】

<正> The incompact long afterglow pigment SrAl2O4: Eu,Dy was synthesized by ceramics technology. The agglomerated starting raw material had little effect on the synthesis of SrAl2O4 matrix through solid-state reaction method, but the shrinkage and densification was retarded greatly by the agglomerated powder by the formation of large and extensive pore network. The sintering mechanism is surface diffusion (without flux B2O3)and grain boundary diffusion (with B2O3 as flux) respectively, and the as-prepared long afterglow pigment glows in the dark for over 4000 min.

【Keywords】

long afterglow; strontium aluminate; rare earths

References

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Springer Journals Database

Total: 12 articles

  • [1] Kimura T; Matsuda Y; Oda M. et al, Effect of agglomerates on sintering of α-Al2O3, Ceram Int, Ceramics International (Ceramics International)
  • [2] Nag Abanti; Kutty T R N, Role of B2O3 on phase stability and long phosphorescence of SrAl2O4: Eu,Dy, Journal of Alloys and Compounds, Journal of Alloys and Compounds (Journal of Alloys and Compounds)
  • [3] Wang Minquan; Wang Dong; Lu Guanglie, Research on fluorescence spectra and structure of single-phase 4SrO·7Al2O3: Eu2+ phosphor prepared by solid-state reaction method, Materials Science and Engineering, Journal of Materials Science (Journal of Materials Science)
  • [4] Rahaman M N, Ceramic Processing and Sintering,

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