Glass formation and structure of glasses in B2O3-Bi2O3-MoO3 system

被引：26

作者：

Iordanova, R. ^{[1
]}

Aleksandrov, L. ^{[1
]}

Bachvarova-Nedelcheva, A. ^{[1
]}

AtaaLa, M. ^{[2
]}

Dimitriev, Y. ^{[2
]}

机构：

[1] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, Acad G Bonchev, BU-1113 Sofia, Bulgaria

[2] Univ Chem Technol & Met, BU-1756 Sofia, Bulgaria

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2011年 / 357卷 / 14期

关键词：

Non-traditional glasses; Amorphous network; Structure; NONLINEAR-OPTICAL PROPERTIES; BISMUTH BORATE GLASSES; MICROHETEROGENEOUS STRUCTURE; CRYSTALLINE; SPECTRA; EPR;

D O I：

10.1016/j.jnoncrysol.2010.12.056

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：

The purpose of this paper is to study the glass formation tendency in the ternary system B2O3-Bi2O3-MoO3 and to define the main structural units building the amorphous network. A wide glass formation area was determined which is situated near the Bi2O3-B2O3 side. A liquid phase separation region was observed near the MoO3-B2O3 side for compositions containing below 25 mol% Bi2O3 and their microheterogeneous structure was observed by SEM. The phase formation was characterized by X-ray diffraction (XRD). By DTA was established the glass transition temperature (T-g) in the range of 380-420 degrees C and crystallization temperature (T-x) vary between 420 and 540 degrees C. The main building units forming the amorphous network are BO3 (1270 and 1200 cm(-1)), BO4 (930-880,1050-1040 cm(-1)), MoO4 (840-760 cm(-1)) and BiO6 (470 cm(-1)). It was proved that Bi2O3 favors the BO3 -> BO4 transformations while MoO3 preserves BO3 units in the amorphous network. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2663 / 2668

页数：6

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