Crystal-size dependence of the spark-plasma-sintering kinetics of ZrB2 ultra-high-temperature ceramics

被引：70

作者：

Zamora, V. ^{[1
]}

Ortiz, A. L. ^{[1
]}

Guiberteau, F. ^{[1
]}

Nygren, M. ^{[2
]}

机构：

[1] Univ Extremadura, Dept Ingn Mecan Energet & Mat, Badajoz, Spain

[2] Univ Stockholm, Dept Mat & Environm Chem, S-10691 Stockholm, Sweden

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2012年 / 32卷 / 02期

关键词：

ZrB2; Ultra-high-temperature ceramics; Spark-plasma sintering; Crystal size; ZIRCONIUM DIBORIDE; PARTICLE-SIZE; BORON-CARBIDE; DENSIFICATION; REFINEMENT;

D O I：

10.1016/j.jeurceramsoc.2011.08.027

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 crystal-size dependence of the spark-plasma-sintering (SPS) kinetics of ZrB2 ultra-high-temperature ceramics (UHTCs) was investigated. It was found that refining the starting powder enhances the SPS kinetics, reducing the onset temperatures of sintering and of the intermediate and final sintering regimes, as well as promoting a greater maximum shrinkage rate at lower temperatures. This enhancement was only relevant with reduction in crystal size to the nanoscale. Finally, the implications for low-temperature sintering of ZrB2 UHTCs are discussed. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：271 / 276

页数：6

共 24 条

[1] Fast densification of ultra-high-temperature ceramics by spark plasma sintering [J].