Oscillatory pressure sintering of Al2O3 ceramics

被引：45

作者：

Yuan, Yi ^{[1
]}

Fan, Jianye ^{[2
]}

Li, Junshan ^{[1
]}

Liu, Jinling ^{[1
]}

Zhao, Ke ^{[1
]}

Liu, Dianguang ^{[2
]}

An, Linan ^{[3
]}

机构：

[1] Southwest Jiaotong Univ, Sch Mech & Engn, Chengdu 610031, Sichuan, Peoples R China

[2] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 610031, Sichuan, Peoples R China

[3] Univ Cent Florida, Dept Mat Sci & Engn, Orlando, FL 32816 USA

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Oscillatory pressure sintering; Al2O3; Densification; Grain growth; Hardness;

D O I：

10.1016/j.ceramint.2020.03.117

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：

Herein, Al2O3 ceramics are sintered by oscillatory pressure sintering (OPS) and hot pressing (HP) at different temperatures. The density and grain size of OPS- and HP-processed Al2O3 ceramics are measured and analyzed using existing models. Results reveal that OPS-processed Al2O3 ceramics exhibit high density and small grain size likely due to plastic deformation. Moreover, OPS-sintered Al2O3 ceramics render higher hardness and fracture strength than HP-sintered Al2O3 ceramics, which can be ascribed to high density and small grain size, respectively. These results demonstrate that sintering behavior and mechanical properties of Al2O3 ceramics can be improved by OPS.

引用

页码：15670 / 15673

页数：4

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