SECONDARY GRAIN GROWTH OF LI2O-AL2O3-SIO2-TIO2 GLASS-CERAMICS

被引：25

作者：

CHYUNG, CK

机构：

[1] Research and Development Laboratories, Corning, New York

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1969年 / 52卷 / 05期

关键词：

D O I：

10.1111/j.1151-2916.1969.tb09175.x

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 kinetics of secondary grain growth in a Ti02‐nucleated β‐spodumene solid‐solution glass‐ceramic was studied. The thermal stability of the grains was excellent. Grain growth followed the cube‐root‐of‐time law. The activation energy of the grain boundary migration was 55 ± 10 kcal/mol. Grain growth inhibition due to Ti02 precipitates and the residual glassy phase was closely examined. The excellent thermal stability of the grains is due to grain growth inhibition by the residual glassy phase, not by rutile precipitates. It is suggested that the diffusion of A2+, and probably the simultaneous diffusion of Li+, through the residual glass is the rate‐limiting process for the grain boundary migration. Copyright © 1969, Wiley Blackwell. All rights reserved

引用

页码：242 / &

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