The structure and certain properties of CaO-In2O3-P2O5 glasses

被引:12
作者
Cernosek, Z. [1 ]
Holubova, J. [1 ]
机构
[1] Univ Pardubice, Fac Chem Technol, Dept Gen & Inorgan Chem, Studentska 573, Pardubice 53210, Czech Republic
关键词
Raman spectroscopy; P-31 MAS NMR; Structure; Density; Glass transition temperature; CALCIUM-PHOSPHATE GLASSES; SPECTROSCOPY; STATE; IRON;
D O I
10.1016/j.jnoncrysol.2018.03.028
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 structure of bulk glasses of xIn(2)O(3)-(50-x)CaO-50P(2)O(5) system was studied. A structural model was proposed based on a detailed analysis of both Raman and P-31 MAS NMR spectra and along with the results of an X-ray analysis. This model is based on the idea of chemical compounds as components having the lowest Gibbs energy and being therefore the most stable. Chemical compounds used by the model: Ca(PO3)(2), Ca2P2O7, In(PO3)(3), In-4(P2O7)(3), CaIn2(P2O7)(2) and InPO4 were proposed on a common basis of the chemical composition and the experimental results. The model demonstrates that the equilibria in the glass-forming melts maintains a mean coordination of cations of practically four across the entire range of the glass-forming region, and that with an increasing concentration of indium, the number of Me-O-P bonds increases by a quarter almost linearly. The validity of the model was verified by experimentally obtained compositional dependencies density, molar volume, glass transition temperature and thermal expansion coefficient.
引用
收藏
页码:44 / 49
页数:6
相关论文
共 28 条
[1]   Bioactive functional materials: a perspective on phosphate-based glasses [J].
Abou Neel, Ensanya A. ;
Pickup, David M. ;
Valappil, Sabeel P. ;
Newport, Robert J. ;
Knowles, Jonathan C. .
JOURNAL OF MATERIALS CHEMISTRY, 2009, 19 (06) :690-701
[2]  
Ardelean I, 2006, J OPTOELECTRON ADV M, V8, P1372
[3]   Structural role of In2O3 in PbO-P2O5-As2O3 glass system by means of spectroscopic and dielectric studies [J].
Baskaran, G. Sahaya ;
Flower, G. Little ;
Rao, D. Krishna ;
Veeraiah, N. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 431 (1-2) :303-312
[4]   Thermal stability and IR spectra of indium(III) phosphates(V) obtained in solid state [J].
Bosacka, M. .
THERMOCHIMICA ACTA, 2011, 523 (1-2) :137-141
[5]   Spectroscopic studies on the structures of phosphate sealing glasses [J].
Brow, RK ;
Alam, TM ;
Tallant, DR ;
Kirkpatrick, RJ .
MRS BULLETIN, 1998, 23 (11) :63-67
[6]   Review: the structure of simple phosphate glasses [J].
Brow, RK .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2000, 263 (1-4) :1-28
[7]   P-31 MAGIC-ANGLE-SPINNING NUCLEAR-MAGNETIC-RESONANCE SPECTROSCOPY OF CALCIUM-PHOSPHATE GLASSES [J].
FLETCHER, JP ;
KIRKPATRICK, RJ ;
HOWELL, D ;
RISBUD, SH .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1993, 89 (17) :3297-3299
[8]   Studies of ternary Li2SO4-Li2O-P2O5 glasses [J].
Ganguli, M ;
Rao, KJ .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1999, 243 (2-3) :251-267
[9]  
Gongyi G., 1993, J NON-CRYST SOLIDS, V162, P164
[10]   A structural model for phosphate glasses [J].
Hoppe, U .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 1996, 195 (1-2) :138-147