ROLE OF CERIUM ORTHOSILICATE IN THE DENSIFICATION OF SI3N4

被引：32

作者：

MAH, TI ^{[1
]}

MAZDIYASNI, KS ^{[1
]}

RUH, R ^{[1
]}

机构：

[1] USAF,MAT LAB,WRIGHT PATTERSON AFB,OH 45433

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1979年 / 62卷 / 1-2期

关键词：

D O I：

10.1111/j.1151-2916.1979.tb18795.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 existence of compounds between Si3N4‐CeO2 and Si3N4‐Ce2O3 was investigated for firing temperatures of 1600° to 1700°C. The two new monoclinic compounds found were Ce2O3·2Si3N4 with lattice parameters a= 16.288, b= 4.848, and c=7.853 Å and β=91.54° and Ce4Si2O7N2 with lattice parameters a= 10.360, b= 10.865, and c=3.974 Å and β=90.33°. Cerium orthosilicate (Ce4.67(SiO4)3O) is present during firing as a glassy intermediate phase which promotes sintering and densification and then reacts with silicon nitride to form cerium silicon oxynitrde (CeSiO2N). Copyright © 1979, Wiley Blackwell. All rights reserved

引用

页码：12 / 16

页数：5

共 11 条

[1] A NEW CERIUM(3) ORTHOSILICATE WITH APATITE STRUCTURE [J].