Non-isothermal crystallization kinetics of V2O5-MoO3-Bi2O3 glasses

被引：0
作者：
R. Iordanova
E. Lefterova
I. Uzunov
Y. Dimitriev
D. Klissurski
机构：
[1] Bulgarian Academy of Sciences,Insitute of General and Inorganic Chemistry
[2] Central Laboratory for Electrochemical Power Sources - BAS,undefined
[3] University of Chemical Technology and Metallurgy,undefined
来源：
Journal of Thermal Analysis and Calorimetry | 2002年 / 70卷
关键词：
non-conventional glasses; glass forming ability; thermal stability; non-isothermal crystallization kinetic;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Characteristic temperatures, such as Tg (glass transition), Tx (crystallization temperature) and Tl (liquidus temperature) of glasses from the V2O5-MoO3-Bi2O3 system were determined by means of differential thermal analysis (DTA). The higher content of MoO3 improved the thermal stability of the glasses as well as the glass forming ability. The non-isothermal crystallization was investigated and following energies of the crystal growth were obtained: glass #1 (80V2O5·20Bi2O3) EG=280 kJ mol-1, glass #2 (40V2O5·30MoO3·30Bi2O3) EG=422 kJ mol-1 and glass #3 (80MoO3·10V2O5·10Bi2O3) EG=305 kJ mol-1. The crystallization mechanism of glass #1 (n=3) is bulk, of glass #3 (n=1) is surface. Bulk and surface crystallization was supposed in glass #2. The presence of high content of a vanadium oxide acts as a nucleation agent and facilitates bulk crystallization.
引用
收藏
页码：393 / 404
页数：11
相关论文
共 109 条
[1]  
Sarjent P. T.(1967)undefined J. Am. Ceram. Soc. 50 500-undefined
[2]  
Roy R.(1981)undefined J. Non-Cryst. Solids 45 297-undefined
[3]  
Dimitriev Y.(1992)undefined J. Am. Ceram. Soc. 75 2315-undefined
[4]  
Jordanova Y.(1990)undefined J. Mat. Sci. Lett. 9 1251-undefined
[5]  
Gateff E.(1994)undefined J. Non-Cryst. Solids 180 58-undefined
[6]  
Dumbaugh W. H.(1998)undefined J. Non-Cryst. Solids 231 227-undefined
[7]  
Lapp J. C.(1987)undefined Thermochim. Acta 110 113-undefined
[8]  
Dimitriev Y.(1983)undefined J. Non-Cryst. Solids 54 253-undefined
[9]  
Mihailova V.(1992)undefined J. Non-Cryst. Solids 142 247-undefined
[10]  
Iordanova R.(1961)undefined J. Appl. Polym. Sci. 5 285-undefined
12345678910