Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering
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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.
Кључне речи:
graphene / mechanical properties / SEM / SPS / XRD / zirconiaИзвор:
Ceramics International, 2018, 44, 14, 16931-16936Издавач:
- Elsevier
Финансирање / пројекти:
- DAAD scholarship project "Development of materials and manufacturing technologies for electric discharge machinable Zirconia–CNT/Graphene composites"
Напомена:
- 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
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Obradović, Nina AU - Kern, Frank PY - 2018 UR - https://dais.sanu.ac.rs/123456789/3691 UR - https://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 UR - https://hdl.handle.net/21.15107/rcub_dais_4559 ER -
@article{ author = "Obradović, Nina and Kern, Frank", year = "2018", 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", url = "https://hdl.handle.net/21.15107/rcub_dais_4559" }
Obradović, N.,& Kern, F.. (2018). Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering. in Ceramics International Elsevier., 44(14), 16931-16936. https://doi.org/10.1016/j.ceramint.2018.06.133 https://hdl.handle.net/21.15107/rcub_dais_4559
Obradović N, Kern F. Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering. in Ceramics International. 2018;44(14):16931-16936. doi:10.1016/j.ceramint.2018.06.133 https://hdl.handle.net/21.15107/rcub_dais_4559 .
Obradović, Nina, Kern, Frank, "Properties of 3Y-TZP zirconia ceramics with graphene addition obtained by spark plasma sintering" in Ceramics International, 44, no. 14 (2018):16931-16936, https://doi.org/10.1016/j.ceramint.2018.06.133 ., https://hdl.handle.net/21.15107/rcub_dais_4559 .