Inhibited grain growth in hydroxyapatite-graphene nanocomposites during high temperature treatment and their enhanced mechanical properties

Yi Liu; Jing Huang; Mitsuo Niinomi; Hua Li

doi:10.1016/j.ceramint.2016.04.038

Inhibited grain growth in hydroxyapatite-graphene nanocomposites during high temperature treatment and their enhanced mechanical properties

Yi Liu, Jing Huang, Mitsuo Niinomi, Hua Li

Materials Development Division

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

Nanostructured hydroxyapatite (HA)-graphene nanosheet (GN) composites have been fabricated by spark plasma sintering consolidation. Nanostructual evolution of the bioceramic-based composites during further high temperature heat treatment is characterized and enhanced mechanical strength is assessed. GN keeps intact after the treatment and its presence at HA grain boundaries effectively inhibits HA grain growth by impeding interconnection of individual HA grains. Microstructural characterization discloses strong coherent interfaces between GN and the (300) plane of HA crystals. This particular matching state in the composites agrees well with the competitive theoretical pull-out energy for single graphene sheet being departed from HA matrix. The toughening regimes that operate in HA-GN composites at high temperatures give clear insight into potential applications of GN for ceramic matrix composites.

Original language	English
Pages (from-to)	11248-11255
Number of pages	8
Journal	Ceramics International
Volume	42
Issue number	9
DOIs	https://doi.org/10.1016/j.ceramint.2016.04.038
Publication status	Published - 2016 Jul 1

Keywords

Annealing
Ceramic matrix composites
Grain growth
Graphene nanosheet
Hydroxyapatite
Interfaces

ASJC Scopus subject areas

Ceramics and Composites
Process Chemistry and Technology
Electronic, Optical and Magnetic Materials
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/j.ceramint.2016.04.038

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title = "Inhibited grain growth in hydroxyapatite-graphene nanocomposites during high temperature treatment and their enhanced mechanical properties",

abstract = "Nanostructured hydroxyapatite (HA)-graphene nanosheet (GN) composites have been fabricated by spark plasma sintering consolidation. Nanostructual evolution of the bioceramic-based composites during further high temperature heat treatment is characterized and enhanced mechanical strength is assessed. GN keeps intact after the treatment and its presence at HA grain boundaries effectively inhibits HA grain growth by impeding interconnection of individual HA grains. Microstructural characterization discloses strong coherent interfaces between GN and the (300) plane of HA crystals. This particular matching state in the composites agrees well with the competitive theoretical pull-out energy for single graphene sheet being departed from HA matrix. The toughening regimes that operate in HA-GN composites at high temperatures give clear insight into potential applications of GN for ceramic matrix composites.",

keywords = "Annealing, Ceramic matrix composites, Grain growth, Graphene nanosheet, Hydroxyapatite, Interfaces",

author = "Yi Liu and Jing Huang and Mitsuo Niinomi and Hua Li",

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AU - Liu, Yi

AU - Huang, Jing

AU - Niinomi, Mitsuo

AU - Li, Hua

PY - 2016/7/1

Y1 - 2016/7/1

N2 - Nanostructured hydroxyapatite (HA)-graphene nanosheet (GN) composites have been fabricated by spark plasma sintering consolidation. Nanostructual evolution of the bioceramic-based composites during further high temperature heat treatment is characterized and enhanced mechanical strength is assessed. GN keeps intact after the treatment and its presence at HA grain boundaries effectively inhibits HA grain growth by impeding interconnection of individual HA grains. Microstructural characterization discloses strong coherent interfaces between GN and the (300) plane of HA crystals. This particular matching state in the composites agrees well with the competitive theoretical pull-out energy for single graphene sheet being departed from HA matrix. The toughening regimes that operate in HA-GN composites at high temperatures give clear insight into potential applications of GN for ceramic matrix composites.

AB - Nanostructured hydroxyapatite (HA)-graphene nanosheet (GN) composites have been fabricated by spark plasma sintering consolidation. Nanostructual evolution of the bioceramic-based composites during further high temperature heat treatment is characterized and enhanced mechanical strength is assessed. GN keeps intact after the treatment and its presence at HA grain boundaries effectively inhibits HA grain growth by impeding interconnection of individual HA grains. Microstructural characterization discloses strong coherent interfaces between GN and the (300) plane of HA crystals. This particular matching state in the composites agrees well with the competitive theoretical pull-out energy for single graphene sheet being departed from HA matrix. The toughening regimes that operate in HA-GN composites at high temperatures give clear insight into potential applications of GN for ceramic matrix composites.

KW - Annealing

KW - Ceramic matrix composites

KW - Grain growth

KW - Graphene nanosheet

KW - Hydroxyapatite

KW - Interfaces

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DO - 10.1016/j.ceramint.2016.04.038

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JF - Ceramics International

SN - 0272-8842

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Inhibited grain growth in hydroxyapatite-graphene nanocomposites during high temperature treatment and their enhanced mechanical properties

Abstract

Keywords

ASJC Scopus subject areas

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