Preparation of Incompact Strontium Aluminate Phosphors
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第1期
论文作者：Xia Wei Xiao Zhiguo Cao Wanghe Luo Xixian
Key words：long afterglow; strontium aluminate; rare earths;
Abstract: 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 SrA12O4 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.
Xia Wei1，Xiao Zhiguo1，Cao Wanghe2，Luo Xixian2
(1.Dalian Luming Light Science & Technology Co. ,Ltd.,Dalian 116025, China;
2.Photoelectron Technology Institute, Dalian Maritime University, Dalian 116026, China)
Abstract: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 SrA12O4 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.
Key words:long afterglow; strontium aluminate; rare earths;
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