Formation of Li3B7O12and O2BF4phases from glass system of 0.5LiF-0.5B2O3containing P2O5and their structural properties

被引:10
作者
Elbatal, F. H. [1 ]
Azooz, M. A. [1 ]
Abdelghany, A. M. [2 ,3 ]
Hammad, A. H. [4 ,5 ]
Elbatal, H. A. [1 ]
机构
[1] Natl Res Ctr, Glass Dept, 33 Elbehouth St, Cairo 12311, Egypt
[2] Natl Res Ctr, Spect Dept, Phys Div, 33 Elbehouth St, Cairo 12311, Egypt
[3] Horus Univ, Basic & Appl Sci Dept, Int Coastal Rd, New Damietta 34511, Damietta Govern, Egypt
[4] King Abdulaziz Univ, Ctr Nanotechnol, Jeddah, Saudi Arabia
[5] Natl Res Ctr, Electron Microscope & Thin Films Dept, Phys Div, Giza, Egypt
关键词
FLUOROBORATE GLASSES; LITHIUM; CRYSTALLIZATION;
D O I
10.1007/s10854-020-03579-1
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Borate glass containing lithium fluoride doped with different ratios of phosphate units was produced by conventional melting-annealing technique. Moreover, the produced samples were subjected to two steps of controlled heat treatment in order to achieve the glass-ceramic derivatives (nucleation and crystal growth regimes). Thermal expansion technique revealed that the nucleation temperature for the studied glasses is around 340 degrees C and the softening temperature (crystal growth) is around 432 degrees C to form glass-ceramic samples. Li(3)B(7)O(12)phase was observed as primary phase for the glass-ceramic samples. Also, other crystalline phases such as LiPO(3)and O(2)BF(4)were formed. Structural changes of both of the glass and the glass-ceramics were investigated through the Fourier transform infrared technique (FTIR). The active range in the FTIR which distinguishes the glass and the crystalized sample is lying from 400 to 1250 cm(-1). The presence of LiF in B(2)O(3)network changes the characteristic units of BO(3)and BO(4)units into BO2F and BO3F units, respectively.
引用
收藏
页码:10315 / 10322
页数:8
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