Enhanced properties of pure alumina ceramics by oscillatory pressure sintering

被引：53

作者：

Han, Yao ^{[1
]}

Li, Shuang ^{[2
]}

Zhu, Tianbin ^{[1
]}

Wu, Weiwei ^{[1
]}

An, Di ^{[1
]}

Xie, Zhipeng ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Shandong Univ Technol, Sch Resources & Environm Engn, Zibo 255049, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2018年 / 44卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Oscillatory pressure sintering; Elastic modulus; Alumina; Grain size; MECHANICAL-PROPERTIES; GRAIN-GROWTH; MICROSTRUCTURE; DENSIFICATION; STRENGTH; HARDNESS; AL2O3;

D O I：

10.1016/j.ceramint.2017.12.133

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：

A novel oscillatory pressure sintering (OPS) process to consolidate high-quality pure alumina ceramics is reported. The microstructure of the ceramics prepared by OPS develops into a higher final density, a smaller and a narrower distribution of grain sizes compared with those prepared by conventional pressureless sintering (PS) and hot-pressing (HP) processes. Enhanced mechanical properties of alumina ceramics were investigated by OPS process. The bending strength, hardness and elastic modulus of the OPS specimen reached about 546 MPa, 19.1 GPa and 374 GPa, respectively, i.e values significantly higher than that of the specimens by PS and HP. XRD analysis indicates the strengthening of atomic bonds aided by oscillatory pressure. The results suggest OPS to be an effective technique for preparing high-quality pure alumina ceramics.

引用

页码：5238 / 5241

页数：4

共 23 条

[11] Transparent sintered corundum with high hardness and strength
Krell, A
Blank, P
Ma, HW
Hutzler, T
van Bruggen, MPB
Apetz, R
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2003, 86 (01) : 12 - 18
[12] Krell A, 1998, J AM CERAM SOC, V81, P1900, DOI 10.1111/j.1151-2916.1998.tb02564.x
[13] Transmission physics and consequences for materials selection, manufacturing, and applications
Krell, Andreas
Hutzler, Thomas
Klimke, Jens
[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2009, 29 (02) : 207 - 221
[14] Densification and grain growth of Al2O3 nanoceramics during pressureless sintering
Li, JG
Ye, YP
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2006, 89 (01) : 139 - 143
[15] Microstructure and mechanical properties of zirconia ceramics consolidated by a novel oscillatory pressure sintering
Li, Shuang
Xie, Zhipeng
Xue, Weijiang
[J]. CERAMICS INTERNATIONAL, 2015, 41 (08) : 10281 - 10286
[16] Sintering of High-Performance Silicon Nitride Ceramics Under Vibratory Pressure
Li, Shuang
Xie, Zhipeng
Xue, Weijiang
Luo, Xudong
An, Linan
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2015, 98 (03) : 698 - 701
[17] THE ELASTIC CONSTANTS OF A SOLID CONTAINING SPHERICAL HOLES
MACKENZIE, JK
[J]. PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B, 1950, 63 (361): : 2 - 11
[18] Electric Current Activation of Sintering: A Review of the Pulsed Electric Current Sintering Process
Munir, Zuhair A.
Quach, Dat V.
Ohyanagi, Manshi
[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2011, 94 (01) : 1 - 19
[19] Rahaman M.N., 2003, SINTERING CERAMICS F, V2
[20] Transparent alumina ceramics densified by a combinational approach of spark plasma sintering and hot isostatic pressing
Trunec, Martin
Klimke, Jens
Shen, Zhijian James
[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2016, 36 (16) : 4333 - 4337

← 1 2 3 →