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Materials 2016, 9(5), 320; doi:10.3390/ma9050320

The Effects of Spark-Plasma Sintering (SPS) on the Microstructure and Mechanical Properties of BaTiO3/3Y-TZP Composites

1
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
2
Department of Periodontics, Hospital of Stomatology Wenzhou Medical University, Wenzhou 325027, China
3
Department of Geriatric Dentistry, School & Hospital of Stomatology, Peking University, Beijing 100081, China
*
Author to whom correspondence should be addressed.
Academic Editor: Eugene A. Olevsky
Received: 5 April 2016 / Revised: 24 April 2016 / Accepted: 25 April 2016 / Published: 28 April 2016
View Full-Text   |   Download PDF [3007 KB, uploaded 28 April 2016]   |  

Abstract

Composite ceramics BaTiO3/3Y-TZP containing 0 mol %, 3 mol %, 5 mol %, 7 mol %, and 10 mol % BaTiO3 have been prepared by conventional sintering and spark-plasma sintering (SPS), respectively. Analysis of the XRD patterns and Raman spectra reveal that the phase composition of t-ZrO2, m-ZrO2, and BaTiO3 has been obtained. Our results indicate that SPS can be effective for the decrease in grain size and porosity compared with conventional sintering, which results in a lower concentration of m-ZrO2 and residual stress. Therefore, the fracture toughness is enhanced by the BaTiO3 phase through the SPS technique, while the behavior was impaired by the piezoelectric second phase through conventional sintering. View Full-Text
Keywords: spark-plasma sintering (SPS); BaTiO3/3Y-TZP; fracture toughness spark-plasma sintering (SPS); BaTiO3/3Y-TZP; fracture toughness
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, J.; Cui, B.; Wang, H.; Lin, Y.; Deng, X.; Li, M.; Nan, C. The Effects of Spark-Plasma Sintering (SPS) on the Microstructure and Mechanical Properties of BaTiO3/3Y-TZP Composites. Materials 2016, 9, 320.

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