Grain refining in spark plasma sintering Al2O3 ceramics

Jinling Liu; Yiguang Wang; Fuqian Yang; Kepi Chen; Linan An

doi:10.1016/j.jallcom.2014.10.113

Grain refining in spark plasma sintering Al₂O₃ ceramics

Jinling Liu, Yiguang Wang, Fuqian Yang, Kepi Chen, Linan An

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

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.

Original language	English
Pages (from-to)	596-600
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	622
DOIs	https://doi.org/10.1016/j.jallcom.2014.10.113
State	Published - Feb 15 2015

Bibliographical note

Publisher Copyright:
© 2014 Published by Elsevier B.V.

Funding

This work was financially supported by the National Scientific Foundation of US (CMMI 0800086 & 0800018), Chinese Nature Science Foundation (Grant No. 51402237 ), China Scholarship Council (Grant No. 2008629106 ), State Key Laboratory of Solidification Processing (Grant No. 82-TZ-2013 ) and the “111” Project (B08040).

Funders	Funder number
Chinese Nature Science Foundation	51402237
Nederlandse Organisatie voor Wetenschappelijk Onderzoek	CMMI 0800086, 0800018
China Scholarship Council	2008629106
State Key Laboratory of Solidification Processing	82-TZ-2013, B08040

Keywords

AlO
Microstructure refining
Nanostructure
Spark plasma sintering

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2014.10.113

Cite this

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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.",

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AU - An, Linan

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AB - 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.

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KW - Nanostructure

KW - Spark plasma sintering

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