AlN ceramics prepared by high-pressure sintering with La2O3 as a sintering aid

被引：25

作者：

Li, X. L. ^{[1
,2
]}

Ma, H. A. ^{[1
]}

Zheng, Y. J. ^{[1
,3
]}

Liu, Y. ^{[2
]}

Zuo, G. H. ^{[3
]}

Liu, W. Q. ^{[1
]}

Li, J. G. ^{[2
]}

Jia, X. ^{[1
,2
]}

机构：

[1] Jilin Univ, Natl Lab Superhard Mat, Changchun 130012, Peoples R China

[2] Henan Polytech Univ, Jiaozuo 454000, Peoples R China

[3] Mudanjiang Teachers Coll, Mudanjiang 157012, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 463卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

nitride materials; sintering; microstructure; high pressure;

D O I：

10.1016/j.jallcom.2007.09.050

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Aluminum nitride ceramics with La2O3 as a sintering aid were obtained under high pressure (5.0 GPa) in a cubic anvil high-pressure and high-temperature apparatus. The results showed that the method could effectively lower the sintering temperature and shorten the sintering time. Under 5.0 GPa, the lowest sintering temperature was 1300 degrees C, which was above 300 degrees C lower than that for conventional liquid-phase sintering. The lattice parameters of the specimens sintered at high pressure were found to decrease by about 0.09% than that of the AlN powder, and residual compressive stress was found, while hexagonal lattice of AlN was not changed. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：412 / 416

页数：5

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