Sintering kinetics of a MgAl2O4 spinel doped with LiF

被引：70

作者：

Rozenburg, Keith ^{[1
]}

Reimanis, Ivar E. ^{[1
]}

Kleebe, Hans-Joachim ^{[2
]}

Cook, Ron L. ^{[3
]}

机构：

[1] Colorado Sch Mines, Golden, CO 80401 USA

[2] Tech Univ Darmstadt, Inst Angew Geowissenschaften, D-64287 Darmstadt, Germany

[3] TDA Res Inc, Arvada, CO 80033 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2008年 / 91卷 / 02期

关键词：

D O I：

10.1111/j.1551-2916.2007.02185.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 sintering kinetics of a pure magnesium aluminate spinel, MgAl2O4, and that doped with LiF were determined through the use of the master sintering curve technique developed by Su and Johnson.(20) Powders with 0%, 0.5%, and 1.0% by mass LiF were densified in a vacuum hot press under a range of unaxial pressures. After the sintering mechanisms in each temperature and pressure regime were determined, an optimized vacuum hot-pressing schedule was formulated for spinel powders doped with 1.0% by mass of LiF. In addition to forming a transient liquid phase, the presence of LiF leads to the formation of oxygen vacancies that promote late-stage sintering in MgAl2O4.

引用

页码：444 / 450

页数：7

共 30 条

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