DIFFERENTIAL THERMAL ANALYSIS OF THE CRYSTALLIZATION KINETICS IN PERLITE-BASED NANOCRYSTALLINE GLASS-CERAMICS

被引：1

作者：

Grigoryan, Lyova ^{[1
]}

Petrosyan, Petik ^{[1
]}

Asryan, Levon ^{[2
]}

Knyazyan, Nikolay ^{[3
]}

Petrosyan, Stepan ^{[4
]}

机构：

[1] Yerevan State Univ, Inst Phys, Yerevan 0025, Armenia

[2] Virginia Polytech Inst & State Univ, Dept Mat Sci & Engn, Blacksburg, VA 24061 USA

[3] Natl Acad Sci, MG Manvelyan Inst Gen & Inorgan Chem, Ashtarak 0051, Armenia

[4] Natl Acad Sci, Inst Radiophys & Elect, Ashtarak 0203, Armenia

来源：

CERAMICS-SILIKATY | 2024年 / 68卷 / 03期

关键词：

Glass-ceramic material; Crystallization kinetics; Activation energy;

D O I：

10.13168/cs.2024.0035

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：

A glass-ceramic material containing nanosized crystallites is synthesized based on the natural volcanic material perlite. Using the differential thermal analysis (DTA) method, the effect of Na2SiF6 (a crystallization catalyst from the fluoride group) on the glass crystallization properties is studied. The characteristic glass-transition temperature Tg, peak crystallization temperature Tp, as well as the crystallization activation energy (Ec) and Avrami index (n) are determined in terms of the catalyst content in the initial composition. A decrease in the nucleation agent content is shown to increase Tg, Tp, and Ec. The effect of the crystallization catalyst content on the crystallization mechanism and glass mechanical properties is discussed.

引用

页码：360 / 365

页数：6

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