Effect of Fe2O3 concentration on the structure of the SiO2-Na2O-Al2O3-B2O3 glass system

被引：79
|
作者：
Dantas, Noelio O. [1 ]
Ayta, Walter E. F. [1 ]
Silva, Anielle C. A. [1 ]
Cano, Nilo F. [2 ]
Silva, Sebastiao W. [3 ]
Morais, Paulo C. [3 ]
机构：
[1] Univ Fed Uberlandia, Inst Fis, LNMIS, BR-38400902 Uberlandia, MG, Brazil
[2] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, Brazil
[3] Univ Brasilia, Inst Fis, BR-70910900 Brasilia, DF, Brazil
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2011年 / 81卷 / 01期
关键词：
Glasses; Glass transitions; Optical properties; Raman spectroscopy; BOROSILICATE GLASSES; BORATE GLASSES; IRON; MELTS;
D O I：
10.1016/j.saa.2011.05.074
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The structural properties of the glass matrix 40SiO(2)center dot 30Na(2)O center dot 1Al(2)O(3)center dot(29-x)B2O3 center dot xFe(2)O(3) (mol%), 0.0 <= x <= 29.0 were studied by X-ray diffraction (XRD), differential thermal analysis (DTA) and Raman and infrared spectroscopy (FT-IR). XRD demonstrated Fe3O4 crystal formation for Fe2O3 concentrations of 29.0 mol%. DTA showed that glass transition and crystallization temperatures changed as a function of Fe2O3 concentration and that these alterations were related to structural change in the glass system. Interesting aspects of Raman and FT-IR spectra were found, and this gives information about of the structure changes in Si-O-Si units of these glasses as a function of Fe2O3 concentration. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：140 / 143
页数：4
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