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Research Article | Open Access

Spark plasma sintering of damage tolerant and machinable YAM ceramics

Qian WANGa,b, Salvatore GRASSOc, Chunfeng HUa,*( ), Haibin ZHANGd, Shu CAIb,*( ), Yoshio SAKKAe, Qing HUANGa,*( )
Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences (CAS), Ningbo 315201, China
School of Engineering & Materials Science and Nanoforce Technology Ltd., Queen Mary University of London, Mile End Road, London E1 4NS, UK
China Academy of Engineering Physics, Mianyang 621900, China
Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China
National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0047, Japan
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Abstract

Single-phase Y4Al2O9 (YAM) powders were synthesized via solid-state reaction starting from nano-sized Al2O3 and Y2O3. Fully dense (99.5%) bulk YAM ceramics were consolidated by spark plasma sintering (SPS) at 1800 ℃. We demonstrated the excellent damage tolerance and good machinability of YAM ceramics. Such properties are attributed to the easy slipping along the weakly bonded crystallographic planes, resulting in multiple energy dissipation mechanisms such as transgranular fracture, shear slipping and localized grain crushing.

Keywords

ceramicsynthesismicrostructurepropertydamage tolerance

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Journal of Advanced Ceramics
Volume 2 Issue 2,
June 2013
Pages 193-200
DOI: 10.1007/s40145-013-0061-1

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Cite this article:
WANG Q, GRASSO S, HU C, et al. Spark plasma sintering of damage tolerant and machinable YAM ceramics. Journal of Advanced Ceramics, 2013, 2(2): 193-200. https://doi.org/10.1007/s40145-013-0061-1

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Received: 03 March 2013
Revised: 03 April 2013
Accepted: 04 April 2013
Published: 04 June 2013
© The author(s) 2013

Open Access: This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.