Crystal Nucleation and Growth in Li2O-Al2O3-SiO2 Base Glass Bulk

被引：1

作者：

Naumov, A. S. ^{[1
]}

Alekseev, R. O. ^{[1
]}

Savinkov, V. I. ^{[1
]}

Sigaev, V. N. ^{[1
]}

机构：

[1] D I Mendeleev Univ Chem Technol Russia, Moscow, Russia

来源：

GLASS AND CERAMICS | 2023年 / 80卷 / 7-8期

关键词：

lithium aluminosilicate glass ceramic; crystallization; nucleation temperature; Marotta method; linear thermal expansion coefficient [LTEC; THERMAL-EXPANSION; CRYSTALLIZATION;

D O I：

10.1007/s10717-023-00604-7

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 crystallization properties of glass with a Li2O-Al2O3-SiO2 based multicomponent composition were studied. Using the Marotta, et al. method, it was found that at 670 degrees C with 2-h soaking affords the maximum rate of nucleation of the crystalline phase of beta-eucryptite-like solid solutions. The activation energy of nucleation and the Avrami parameter were measured by means of DSC. Using the gradient crystallization method, the temperature ranges of heat treatments where transparent sitalls obtain were determined. More accurate determination of the temperature-time parameters of the nucleation stage made it possible to shorten the time of the second stage of sitallization that is necessary for the complete formation of the structure of transparent sitalls. By varying the soaking time at 710 degrees C it was possible to vary the LTEC evenly in the temperature interval -120... +500 degrees C in the range (-3... +41) x 10 (-7) K-1

引用

页码：307 / 312

页数：6

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