Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering

Obradović, Nina; Kern, Frank

doi:10.1016/j.ceramint.2018.06.133

2018

CERI-D-18-04486R1.pdf (1.041Mb)

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Obradović, Nina

Kern, Frank

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Abstract

In this study the influence of graphene addition on the microstructure, phase composition, mechanical, and electrical properties of 3Y-TZP ceramics was investigated. Blends of pure 3Y-TZP and with addition of 1 − 4 vol% graphene were prepared by mixing and milling, and they were consolidated by spark plasma sintering (SPS). Addition of 3 vol% graphene is necessary to overcome the percolation threshold and obtain electrically conductive composites. However, rising the graphene contents obstructs sinterability. Hence, flexural strength, Young's modulus, and hardness decrease with increasing the graphene content, and the fracture resistance reaches an intermediate maximum at 2 vol% graphene. Graphene lamellae are oriented orthogonally to the pressing direction. They evidently provide some energy dissipation by crack deflection. TZP-graphene interfaces are very weak. Thus, crack bridging can be neglected. © 2018 Elsevier Ltd and Techna Group S.r.l.

Keywords:

graphene / mechanical properties / SEM / SPS / XRD / zirconia

Source:
Ceramics International, 2018, 44, 14, 16931-16936

Publisher:

Elsevier

Projects:

DAAD scholarship project "Development of materials and manufacturing technologies for electric discharge machinable Zirconia–CNT/Graphene composites"

Note:

This is the peer-reviewed version of the article: Obradović, N., Kern, F., 2018. Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering. Ceramics International 44, 16931–16936. https://doi.org/10.1016/j.ceramint.2018.06.133

DOI: 10.1016/j.ceramint.2018.06.133

ISSN: 0272-8842

WoS: 000442714100103

Scopus: 2-s2.0-85048716510

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TY  - JOUR
AU  - Obradović, Nina
AU  - Kern, Frank
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3691
UR  - http://dais.sanu.ac.rs/123456789/4559
AB  - In this study the influence of graphene addition on the microstructure, phase composition, mechanical, and electrical properties of 3Y-TZP ceramics was investigated. Blends of pure 3Y-TZP and with addition of 1 − 4 vol% graphene were prepared by mixing and milling, and they were consolidated by spark plasma sintering (SPS). Addition of 3 vol% graphene is necessary to overcome the percolation threshold and obtain electrically conductive composites. However, rising the graphene contents obstructs sinterability. Hence, flexural strength, Young's modulus, and hardness decrease with increasing the graphene content, and the fracture resistance reaches an intermediate maximum at 2 vol% graphene. Graphene lamellae are oriented orthogonally to the pressing direction. They evidently provide some energy dissipation by crack deflection. TZP-graphene interfaces are very weak. Thus, crack bridging can be neglected. © 2018 Elsevier Ltd and Techna Group S.r.l.
PB  - Elsevier
T2  - Ceramics International
T1  - Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering
SP  - 16931
EP  - 16936
VL  - 44
IS  - 14
DO  - 10.1016/j.ceramint.2018.06.133
ER  -

@article{
author = "Obradović, Nina and Kern, Frank",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3691, http://dais.sanu.ac.rs/123456789/4559",
abstract = "In this study the influence of graphene addition on the microstructure, phase composition, mechanical, and electrical properties of 3Y-TZP ceramics was investigated. Blends of pure 3Y-TZP and with addition of 1 − 4 vol% graphene were prepared by mixing and milling, and they were consolidated by spark plasma sintering (SPS). Addition of 3 vol% graphene is necessary to overcome the percolation threshold and obtain electrically conductive composites. However, rising the graphene contents obstructs sinterability. Hence, flexural strength, Young's modulus, and hardness decrease with increasing the graphene content, and the fracture resistance reaches an intermediate maximum at 2 vol% graphene. Graphene lamellae are oriented orthogonally to the pressing direction. They evidently provide some energy dissipation by crack deflection. TZP-graphene interfaces are very weak. Thus, crack bridging can be neglected. © 2018 Elsevier Ltd and Techna Group S.r.l.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering",
pages = "16931-16936",
volume = "44",
number = "14",
doi = "10.1016/j.ceramint.2018.06.133"
}

Obradović N, Kern F. Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering. Ceramics International. 2018;44(14):16931-16936

Obradović, N.,& Kern, F. (2018). Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering.
Ceramics InternationalElsevier., 44(14), 16931-16936. 
https://doi.org/10.1016/j.ceramint.2018.06.133

Obradović Nina, Kern Frank, "Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering" 44, no. 14 (2018):16931-16936,
https://doi.org/10.1016/j.ceramint.2018.06.133 .