The effect of Fe addition on the densification of B4C powder by spark plasma sintering

N. Frage; S. Hayun; S. Kalabukhov; M. P. Dariel

doi:10.1007/s11106-007-0082-9

The effect of Fe addition on the densification of B₄C powder by spark plasma sintering

N. Frage, S. Hayun, S. Kalabukhov, M. P. Dariel

Department of Materials Engineering

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

33 Scopus citations

Abstract

Boron carbide is a low-density ceramic with high hardness and stiffness values that make it a valuable candidate for light armor applications. Fully dense boron carbide is fabricated by hot pressing of fine (<2 μm) powder at a relatively high temperature (2150-2200°C). Fully dense boron carbide can be processed from an initial mixture of 5.5 vol.% Fe and low-cost B₄C powder by spark plasma sintering (SPS) at 2000°C. At this temperature, Fe-free boron carbide can be consolidated only to 96% of the theoretical density. The effect of the Fe addition on the densities is even more pronounced at lower processing temperatures and is related to the presence of a liquid phase in the Fe-containing material. The resulting microstructure and mechanical properties of the Fe-containing boron carbide are presented and discussed.

Original language	English
Pages (from-to)	533-538
Number of pages	6
Journal	Powder Metallurgy and Metal Ceramics
Volume	46
Issue number	11-12
DOIs	https://doi.org/10.1007/s11106-007-0082-9
State	Published - 1 Nov 2007

Keywords

Boron carbide
Iron
Mechanical properties
Powder
Sintering
Spark plasma
Structure

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

10.1007/s11106-007-0082-9

Cite this

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title = "The effect of Fe addition on the densification of B4C powder by spark plasma sintering",

abstract = "Boron carbide is a low-density ceramic with high hardness and stiffness values that make it a valuable candidate for light armor applications. Fully dense boron carbide is fabricated by hot pressing of fine (<2 μm) powder at a relatively high temperature (2150-2200°C). Fully dense boron carbide can be processed from an initial mixture of 5.5 vol.% Fe and low-cost B4C powder by spark plasma sintering (SPS) at 2000°C. At this temperature, Fe-free boron carbide can be consolidated only to 96% of the theoretical density. The effect of the Fe addition on the densities is even more pronounced at lower processing temperatures and is related to the presence of a liquid phase in the Fe-containing material. The resulting microstructure and mechanical properties of the Fe-containing boron carbide are presented and discussed.",

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author = "N. Frage and S. Hayun and S. Kalabukhov and Dariel, {M. P.}",

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AU - Frage, N.

AU - Hayun, S.

AU - Kalabukhov, S.

AU - Dariel, M. P.

N1 - Funding Information: This work was partly supported by Israel Science Foundation Grant 118/03.

PY - 2007/11/1

Y1 - 2007/11/1

N2 - Boron carbide is a low-density ceramic with high hardness and stiffness values that make it a valuable candidate for light armor applications. Fully dense boron carbide is fabricated by hot pressing of fine (<2 μm) powder at a relatively high temperature (2150-2200°C). Fully dense boron carbide can be processed from an initial mixture of 5.5 vol.% Fe and low-cost B4C powder by spark plasma sintering (SPS) at 2000°C. At this temperature, Fe-free boron carbide can be consolidated only to 96% of the theoretical density. The effect of the Fe addition on the densities is even more pronounced at lower processing temperatures and is related to the presence of a liquid phase in the Fe-containing material. The resulting microstructure and mechanical properties of the Fe-containing boron carbide are presented and discussed.

AB - Boron carbide is a low-density ceramic with high hardness and stiffness values that make it a valuable candidate for light armor applications. Fully dense boron carbide is fabricated by hot pressing of fine (<2 μm) powder at a relatively high temperature (2150-2200°C). Fully dense boron carbide can be processed from an initial mixture of 5.5 vol.% Fe and low-cost B4C powder by spark plasma sintering (SPS) at 2000°C. At this temperature, Fe-free boron carbide can be consolidated only to 96% of the theoretical density. The effect of the Fe addition on the densities is even more pronounced at lower processing temperatures and is related to the presence of a liquid phase in the Fe-containing material. The resulting microstructure and mechanical properties of the Fe-containing boron carbide are presented and discussed.

KW - Boron carbide

KW - Iron

KW - Mechanical properties

KW - Powder

KW - Sintering

KW - Spark plasma

KW - Structure

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