Grain refining in spark plasma sintering Al2O3 ceramics

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

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


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 languageEnglish
Pages (from-to)596-600
Number of pages5
JournalJournal of Alloys and Compounds
StatePublished - Feb 15 2015

Bibliographical note

Funding Information:
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).

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


  • AlO
  • Microstructure refining
  • Nanostructure
  • Spark plasma sintering

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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