Toughening of zirconia/alumina composites by the addition of graphene platelets

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Toughening of zirconia/alumina composites by the addition of graphene platelets. / Liu, J.; Jiang, K.; Yan, H.; Reece, M.J.

In: Journal of the European Ceramic Society, Vol. 32, No. 16, 01.12.2012, p. 4185-4193.

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@article{4a3a5ad85f494b13af63a6addb30e3a0,
title = "Toughening of zirconia/alumina composites by the addition of graphene platelets",
abstract = "A study on graphene platelet/zirconia-toughened alumina (GPL/ZTA) composites was carried out to evaluate the potential of the new structural materials. GPL-ZrO -Al O powders were obtained by ball milling of graphene platelets and alumina powders using yttria stabilized ZrO balls. Samples were sintered at different temperatures using spark plasma sintering. Fracture toughness was determined by the single-edge notched beam method. The results show that the GPLs are uniformly distributed in the ceramic matrix and have survived high temperature sintering processes. Several sintering experiments were carried out. It is found that at 1550°C, GPL/ZTA composites were obtained with nearly full density, maximum hardness and fracture toughness. A 40% increase in fracture toughness in the ZTA composite has been achieved by adding graphene platelets. The toughening mechanisms, such as pull out, bridging and crack deflection, were observed and are discussed.",
author = "J. Liu and K. Jiang and H. Yan and M.J. Reece",
note = "Copyright 2012 Elsevier B.V., All rights reserved.",
year = "2012",
month = dec,
day = "1",
doi = "10.1016/j.jeurceramsoc.2012.07.007",
language = "English",
volume = "32",
pages = "4185--4193",
journal = "Journal of the European Ceramic Society",
issn = "0955-2219",
publisher = "Elsevier",
number = "16",

}

RIS

TY - JOUR

T1 - Toughening of zirconia/alumina composites by the addition of graphene platelets

AU - Liu, J.

AU - Jiang, K.

AU - Yan, H.

AU - Reece, M.J.

N1 - Copyright 2012 Elsevier B.V., All rights reserved.

PY - 2012/12/1

Y1 - 2012/12/1

N2 - A study on graphene platelet/zirconia-toughened alumina (GPL/ZTA) composites was carried out to evaluate the potential of the new structural materials. GPL-ZrO -Al O powders were obtained by ball milling of graphene platelets and alumina powders using yttria stabilized ZrO balls. Samples were sintered at different temperatures using spark plasma sintering. Fracture toughness was determined by the single-edge notched beam method. The results show that the GPLs are uniformly distributed in the ceramic matrix and have survived high temperature sintering processes. Several sintering experiments were carried out. It is found that at 1550°C, GPL/ZTA composites were obtained with nearly full density, maximum hardness and fracture toughness. A 40% increase in fracture toughness in the ZTA composite has been achieved by adding graphene platelets. The toughening mechanisms, such as pull out, bridging and crack deflection, were observed and are discussed.

AB - A study on graphene platelet/zirconia-toughened alumina (GPL/ZTA) composites was carried out to evaluate the potential of the new structural materials. GPL-ZrO -Al O powders were obtained by ball milling of graphene platelets and alumina powders using yttria stabilized ZrO balls. Samples were sintered at different temperatures using spark plasma sintering. Fracture toughness was determined by the single-edge notched beam method. The results show that the GPLs are uniformly distributed in the ceramic matrix and have survived high temperature sintering processes. Several sintering experiments were carried out. It is found that at 1550°C, GPL/ZTA composites were obtained with nearly full density, maximum hardness and fracture toughness. A 40% increase in fracture toughness in the ZTA composite has been achieved by adding graphene platelets. The toughening mechanisms, such as pull out, bridging and crack deflection, were observed and are discussed.

UR - http://www.scopus.com/inward/record.url?partnerID=yv4JPVwI&eid=2-s2.0-84866765528&md5=72e2aac7729e189362879f6175f43243

U2 - 10.1016/j.jeurceramsoc.2012.07.007

DO - 10.1016/j.jeurceramsoc.2012.07.007

M3 - Article

AN - SCOPUS:84866765528

VL - 32

SP - 4185

EP - 4193

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

SN - 0955-2219

IS - 16

ER -