Physico-mechanical and photoluminescence properties of EuxMg2-xSiO4 system sintered under different conditions

被引：5

作者：

Reda, A. E. ^{[1
]}

Khattab, R. M. ^{[1
]}

Sadek, H. E. H. ^{[1
]}

Zawrah, M. F. ^{[1
]}

Hamdy, Y. M. ^{[2
]}

机构：

[1] Natl Res Ctr, Dept Ceram, Cairo 12622, Egypt

[2] Natl Res Ctr, Dept Spect, Cairo 12622, Egypt

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 06期

关键词：

Forsterit doped by Eu2O3; Sintering; Physico-mechanical; Photoluminescence; LUMINESCENCE PROPERTIES; AIR; REDUCTION; EU3+; EUROPIUM; EU2+; NANOPOWDERS; COMPOSITES; PHOSPHORS; POWDER;

D O I：

10.1016/j.ceramint.2018.01.049

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This work focuses on sintering of EuxMg2-xSiO4 (x = 0.0, 0.01, 0.03, 0.05) forsterite ceramics under different conditions and study their microstructures, physico-mechanical and photoluminescence characteristics. The starting materials were waste silica fume, pure MgO and europium oxide (Eu2O3). The prepared batches were sintered up to 1500 degrees C in the presence or absence of carbon in ambient atmosphere. The presence of carbon helped in reduction of Eu3+ into Eu2+. The effect of sintering conditions and formed phases on the properties of final product were investigated. The results indicated that the specimens sintered without carbon exhibited improved physico-mechanical properties with formation of forsterite and Eu-4.67 (SiO4)(3)O precipitated from the formed liquid phase. While the samples sintered in carbon exhibited lower physic-mechanical properties with formation of forsterite and clinoenstatite. Photoluminescence properties were improved with increasing the amount of added Eu2O3 for all sintered samples. The specimens sintered without carbon exhibited life time higher than those sintered in the presence of carbon.

引用

页码：6500 / 6507

页数：8

共 53 条

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