Densification of nanocrystalline TiC ceramics by spark plasma sintering

Rachman Chaim; Liliya Kleiner; Sergey Kalabukhov

doi:10.1016/j.matchemphys.2011.07.072

Densification of nanocrystalline TiC ceramics by spark plasma sintering

Rachman Chaim, Liliya Kleiner, Sergey Kalabukhov

Department of Materials Engineering

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

9 Scopus citations

Abstract

Fabrication of dense nanocrystalline TiC by spark plasma sintering was studied. TiC nano-particles 34 nm in size were densified by spark plasma sintering at 100 MPa for 5 min between 1100 °C and 1700 °C. The density linearly increased between 1100 °C and 1500 °C from 72% to 97%. Density of 98% was reached at 1700 °C compared to 76% for the micrometer size reference powder. The main densification occurred during the heating and resulted in nanocrystalline to submicrometer size grains. Lattice parameter decreased and Ti/C ratio increased with the temperature from stoichiometric TiC (1.17) towards that of Ti₂C (1.77). A unique layered microstructure in regions a few tens to hundreds of micrometer in size, composed of TiC/Ti ₂C, resembled the flow pattern characteristic of cooperative particle sliding in granular materials.

Original language	English
Pages (from-to)	815-821
Number of pages	7
Journal	Materials Chemistry and Physics
Volume	130
Issue number	1-2
DOIs	https://doi.org/10.1016/j.matchemphys.2011.07.072
State	Published - 17 Oct 2011

Keywords

Carbides
Densification
Nanostructures
Spark plasma sintering

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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10.1016/j.matchemphys.2011.07.072

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title = "Densification of nanocrystalline TiC ceramics by spark plasma sintering",

abstract = "Fabrication of dense nanocrystalline TiC by spark plasma sintering was studied. TiC nano-particles 34 nm in size were densified by spark plasma sintering at 100 MPa for 5 min between 1100 °C and 1700 °C. The density linearly increased between 1100 °C and 1500 °C from 72% to 97%. Density of 98% was reached at 1700 °C compared to 76% for the micrometer size reference powder. The main densification occurred during the heating and resulted in nanocrystalline to submicrometer size grains. Lattice parameter decreased and Ti/C ratio increased with the temperature from stoichiometric TiC (1.17) towards that of Ti2C (1.77). A unique layered microstructure in regions a few tens to hundreds of micrometer in size, composed of TiC/Ti 2C, resembled the flow pattern characteristic of cooperative particle sliding in granular materials.",

keywords = "Carbides, Densification, Nanostructures, Spark plasma sintering",

author = "Rachman Chaim and Liliya Kleiner and Sergey Kalabukhov",

note = "Funding Information: The financial support by the Israel Ministry of Science ( MOS 3-3429 ) is gratefully acknowledged. Prof. Nahum Frage from BGU is acknowledged for the SPS facility. We thank Dr. Alex Berner from Technion for the EDS analyses.",

year = "2011",

month = oct,

day = "17",

doi = "10.1016/j.matchemphys.2011.07.072",

language = "English",

volume = "130",

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journal = "Materials Chemistry and Physics",

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T1 - Densification of nanocrystalline TiC ceramics by spark plasma sintering

AU - Chaim, Rachman

AU - Kleiner, Liliya

AU - Kalabukhov, Sergey

N1 - Funding Information: The financial support by the Israel Ministry of Science ( MOS 3-3429 ) is gratefully acknowledged. Prof. Nahum Frage from BGU is acknowledged for the SPS facility. We thank Dr. Alex Berner from Technion for the EDS analyses.

PY - 2011/10/17

Y1 - 2011/10/17

N2 - Fabrication of dense nanocrystalline TiC by spark plasma sintering was studied. TiC nano-particles 34 nm in size were densified by spark plasma sintering at 100 MPa for 5 min between 1100 °C and 1700 °C. The density linearly increased between 1100 °C and 1500 °C from 72% to 97%. Density of 98% was reached at 1700 °C compared to 76% for the micrometer size reference powder. The main densification occurred during the heating and resulted in nanocrystalline to submicrometer size grains. Lattice parameter decreased and Ti/C ratio increased with the temperature from stoichiometric TiC (1.17) towards that of Ti2C (1.77). A unique layered microstructure in regions a few tens to hundreds of micrometer in size, composed of TiC/Ti 2C, resembled the flow pattern characteristic of cooperative particle sliding in granular materials.

AB - Fabrication of dense nanocrystalline TiC by spark plasma sintering was studied. TiC nano-particles 34 nm in size were densified by spark plasma sintering at 100 MPa for 5 min between 1100 °C and 1700 °C. The density linearly increased between 1100 °C and 1500 °C from 72% to 97%. Density of 98% was reached at 1700 °C compared to 76% for the micrometer size reference powder. The main densification occurred during the heating and resulted in nanocrystalline to submicrometer size grains. Lattice parameter decreased and Ti/C ratio increased with the temperature from stoichiometric TiC (1.17) towards that of Ti2C (1.77). A unique layered microstructure in regions a few tens to hundreds of micrometer in size, composed of TiC/Ti 2C, resembled the flow pattern characteristic of cooperative particle sliding in granular materials.

KW - Carbides

KW - Densification

KW - Nanostructures

KW - Spark plasma sintering

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U2 - 10.1016/j.matchemphys.2011.07.072

DO - 10.1016/j.matchemphys.2011.07.072

M3 - Article

AN - SCOPUS:80052584386

SN - 0254-0584

VL - 130

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EP - 821

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 1-2

ER -

Densification of nanocrystalline TiC ceramics by spark plasma sintering

Abstract

Keywords

ASJC Scopus subject areas

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