Low-temperature sintering of high-density aluminium nitride ceramics without additives at high pressure

被引：24

作者：

Li, X. L.

Ma, H. A.

Zuo, G. H.

Liu, W. Q.

Zheng, Y. J.

Li, J. G.

Li, S. S.

Jia, X. ^{[1
]}

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：

SCRIPTA MATERIALIA | 2007年 / 56卷 / 12期

基金：

中国国家自然科学基金;

关键词：

aluminium nitride; high pressure; low-temperature sintering; high density; ceramics;

D O I：

10.1016/j.scriptamat.2007.03.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High-density AIN ceramics were fabricated without additives under high pressure (3.15-4.95 GPa) at a low temperature (1300 degrees C), which is 300-500 degrees C lower than that for conventional liquid-phase sintering, in a cubic anvil high-pressure and high-temperature apparatus. The relative density of pure AIN ceramics is 94.92% at 1300 degrees C and 4.75 GPa for 50 min. Grain boundary phases were found in the neck area between AIN grains, indicating that grain growth by solution precipitation must play some role. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1015 / 1018

页数：4

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