Isothermal nanocrystallization of vanadate-phosphate glasses

被引：10

作者：

Pietrzak, Tomasz K. ^{[1
]}

Wasiucionek, Marek ^{[1
]}

Nowinski, Jan L. ^{[1
]}

Garbarczyk, Jerzy E. ^{[1
]}

机构：

[1] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland

来源：

SOLID STATE IONICS | 2013年 / 251卷

关键词：

Nanocrystallization; Isothermal crystallization; Vanadate-phosphate glasses; Cathode materials; ELECTRICAL-PROPERTIES; PHASE-CHANGE; MICROSTRUCTURE; KINETICS;

D O I：

10.1016/j.ssi.2013.01.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Glasses of the nominal composition of 90V(2)O(5) center dot 10P(2)O(5) were prepared by a standard melt-quenching technique. Their thermal and electrical properties during isothermal annealing have been studied by DSC and impedance spectroscopy. Time dependences of crystallization observed in isothermal DSC experiments at a set of temperatures were satisfactorily fitted with the Avrami formula. The progress in crystallization during the annealing resulted in a monotonic increase in the electronic conductivity. The conductivity changes were adequately represented by a proposed theoretical model of conductivity changes caused by isothermal nanocrystallization. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：78 / 82

页数：5

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