Pulse electric current sintering of Al2O3/3 vol% ZrO2 with constrained grains and high strength

被引：22

作者：

Jayaseelan, DD ^{[1
]}

Kondo, N ^{[1
]}

Rani, DA ^{[1
]}

Ueno, S ^{[1
]}

Ohji, T ^{[1
]}

Kanzaki, S ^{[1
]}

机构：

[1] AIST, Synergy Mat Res Ctr, Nagoya, Aichi 4638687, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2002年 / 85卷 / 11期

关键词：

D O I：

10.1111/j.1151-2916.2002.tb00548.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 pulse electric current sintering technique (PECS) was demonstrated to be effective in rapid densification of fine-grained Al2O3/3Y-ZrO2 using available commercial powders. The composites attained full densification (>99% of TD) at 1450degreesC in less than 5 min. The composites sintered at a high heating rate had a fine microstructure. The incorporation of 3 vol% 3Y-ZrO2 substantially increased the average fracture strength and the toughness of alumina to as high as 827 MPa and 6.1 MPa.m(1/2), respectively. A variation in the heating rate during the PECS process influenced grain size, microstructure, and strength, though there was little or no variation in the fracture toughness.

引用

页码：2870 / 2872

页数：3

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