以亚微米级单相铈离子掺杂硅酸镥(Ce:Lu2SiO5,LSO)发光粉体为原料,采用放电等离子烧结(Spark Plasma Sintering)技术对多晶LSO闪烁陶瓷的制各方法进行了探索,同时对其发光性能进行了研究.在(1350℃/Smin)的条件下实现了LSO粉体的快速致密化烧结,研制出了具有良好发光性能的半透明多晶LSO闪烁陶瓷,其相对密度达到理论密度的99.5％.在360nm紫外激发条件下,呈现位于380～600nm的宽峰发射行为.其相对发光强度达到LSO闪烁单晶的75％,发光衰减时间仅为9.67ns.该材料有望成为一种新型的高光输出、快衰减多晶闪烁材料.
参考文献
| [1] | Lempicki A,Brecher C,Lingertat H,et al.A ceramic version of the LSO scintillator.IEEE.T.Nucl.Sci.,2008,55(3):1148-1151. |
| [2] | Wang Y,van Loef E,Rhodes W H,et al.Lu2SiO5:Ce optical ceramic scintillator for PET.IEEE.T.Nucl.Sci.,2009,56(3):887-891. |
| [3] | 高濂,宫本大树(GAO Lian,et al).放电等离子烧结技术.无机材料学报(Journal of Inorganic Materials),1997,12(2):129-133. |
| [4] | Gao L,Hong J S,Miyamoto H,et al.Bendingstrength and microstructure of Al2O3 ceramics densified by spark plasma sintering,J.Eur.Ceram.Soc.,2000,20(12):2149-2152. |
| [5] | Wang S W,Chen L D,Hirai T.Densification of Al2O3 powder using spark plasma sintering.J.Mater.Res.,2000,15(4):982-987. |
| [6] | Chaim R,Shen Z,Nygren M.Transparent nanocrystalline MgO by rapid and low-temperature spark plasma sintering.J.Mater.Res.,2004,19(9):2527-2531. |
| [7] | Chaim R,Kalina M,Shen J Z.Transparent yttrium aluminum garnet (YAG) ceramics by spark plasma sintering.J.Eur.Ceram.Soc.,2007,27(11):3331-3337. |
| [8] | Wang C,Zhao Z.Transparent MgAl2O4 ceramic produced by spark plasma sintering.Scripta Mater.,2009,61(2):193-196. |
| [9] | Anselmi-Tamburini U,Woolman J N,Munir Z A.Transparent nanometric cubic and tetragonal zirconia obtained by high pressure pulsed electric current sintering.Adv.Funct.Mater.,2007,17(16):3267-3273. |
| [10] | Jin X,Gao L,Sun J.Highly transparent alumina spark plasma sintered from common grade commercial powder:the effect of powder treatment.J.Am.Ceram.Soc.,2010,93(5):1232-1236. |
| [11] | 易海兰,蒋志君,毛小建,等(YI Hai-Lan,et al).透明氧化铝陶瓷的研究新进展,无机材料学报(Journal of Inorganic Materials),2010,25(8):795-800. |
| [12] | Yu J,Shi J L,Yuan Q M,et al.Effect of composition on the sintering and microstructure of diphasic mullite gels.Ceram.Int.,2000,26(3):255-263. |
| [13] | Hong S H,Messing G L.Anisotropic grain growth in diphasic Gel derived titania doped mullite.J.Am.Ceram.Soc.,1998,81(5):1269-1277. |
| [14] | Ananieva G V,Korovkin A M,Merkulyaeva T I,et al.Growth of lanthanide oxyorthosilicate single crystals,and their structural and optical characteristics.Neorg.Mater.,1981,17(6):1037-1042. |
| [15] | Pidol L,Guillot-No(e)l O,Kahn-Harari A,et al.EPR study of Ce3+ ions in lutetium silicate scintillators Lu2Si2O7 and Lu2SiO5.J.Phys.Chem.Solids,2006,67(4):643-650. |
| [16] | Ren G,Qin L,Lu S,et al.Scintillation characteristics of lutetium oxyorthosilicate (Lu2SiO5:Ce) crystals doped with cerium ions.Nuclear Instruments and Methods in Physics Research Section A,2004,531(3):560-565. |
| [17] | Brustlein S,Devaux F,Wacogne B,et al.Fluorescence lifetime imaging on the picosecond timescale.Laser Phys.,2004,14(2):238-242. |
| [18] | Suzuki H,Tombrello T A,Melcher C L,et al.UV and gamma-ray excited luminescence of cerium-doped rare-earth oxyorthosilicates.Nucl.Instrum.Methods Phys.Res.Sect.A,1992,320(1/2):263-272. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%