Title

Grain refining in spark plasma sintering Al2O3 ceramics

Authors

Authors

J. L. Liu; Y. G. Wang; F. Q. Yang; K. P. Chen;L. N. An

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

J. Alloy. Compd.

Keywords

Spark plasma sintering; Nanostructure; Al2O3; Microstructure refining; DC ELECTRIC-FIELD; PLASTIC-DEFORMATION; OXIDE CERAMICS; FINAL-STAGE; DENSIFICATION; MECHANISM; ALUMINA; GROWTH; MICROSTRUCTURE; TECHNOLOGY; Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy &; Metallurgical Engineering

Abstract

The paper reports the effect of starting powder size and sintering temperature on the grain refining in spark plasma sintering Al2O3. It was found that the grain refining effect only occurred for the starting particles larger than a certain size. The grain size increased with increasing sintering temperature. The grain refining is likely caused by the rearrangement of dislocations through a thermo-mechanical fatigue process. It suggested that nanostructured alumina ceramics could be synthesized from micro-sized powders by optimizing the particle size and sintering temperature. Published by Elsevier B.V.

Journal Title

Journal of Alloys and Compounds

Volume

622

Publication Date

1-1-2015

Document Type

Article

Language

English

First Page

596

Last Page

600

WOS Identifier

WOS:000345749500089

ISSN

0925-8388

Share

COinS