Flash sintering of ultra-high pure alumina ceramics with fine microstructure

被引：12

作者：

Yang, Shoulei ^{[1
]}

Zhu, Yinxiao ^{[1
]}

Yang, Sirui ^{[1
]}

Fu, Xinxin ^{[1
]}

Wei, Pengfei ^{[1
]}

Fan, Lei ^{[1
]}

Zhang, Mengwen ^{[1
]}

An, Linan ^{[2
]}

机构：

[1] Zhengzhou Univ Aeronaut, Sch Mat Sci & Engn, Zhengzhou 450046, Peoples R China

[2] Dongguan Univ Technol, Sch Mech Engn, Dongguan 523808, Guangdong, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2022年 / 105卷 / 09期

基金：

中国国家自然科学基金;

关键词：

alumina; fine grains; flash sintering; hardness; DENSIFICATION; CONDUCTIVITY; ZIRCONIA; FIELD; OXIDE;

D O I：

10.1111/jace.18554

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 nearly fully dense ultra-high pure (>99.99%) alpha-Al2O3 ceramics were prepared by flash sintering at the furnace temperature of 1300 degrees C. Compared with the samples sintered at 1300 and 1650 degrees C without electrical field, the flash-sintered samples exhibited remarkably improved density and finer grains. The flash-sintered samples also exhibited high hardness, which is even higher than that of the hot-pressed sample. Therefore, it is believed that flash sintering could be an effective technique for the preparation of ultra-high pure alumina ceramics.

引用

页码：5569 / 5575

页数：7

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