Reaction-bonded boron carbide/magnesium-silicon composites

Matan Cafri; Alon Malka; Helen Dilman; Moshe P. Dariel; Nahum Frage

doi:10.1111/ijac.12085

Reaction-bonded boron carbide/magnesium-silicon composites

Matan Cafri, Alon Malka, Helen Dilman, Moshe P. Dariel, Nahum Frage

Department of Materials Engineering

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

13 Scopus citations

Abstract

Reaction-bonded boron carbide was manufactured by infiltrating porous boron carbide preforms at 1273 K with a Mg-Si eutectic alloy. The resulting composite material consists, in addition to the original B₄C, of SiC, Mg ₂Si, and a Mg-rich complex boride/carbide Mg_x(Al,Si) _y(B,C)_z phase. The composites display high hardness (1700 HV), Young's modulus (356 MPa) and a moderate bending strength (230 MPa). The ballistic efficiency (of about 6.7), as determined by the depth of penetration method, is much higher than that of alumina and similar to that of silicon-infiltrated reaction-bonded composites.

Original language	English
Pages (from-to)	273-279
Number of pages	7
Journal	International Journal of Applied Ceramic Technology
Volume	11
Issue number	2
DOIs	https://doi.org/10.1111/ijac.12085
State	Published - 1 Mar 2014

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Marketing
Materials Chemistry

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title = "Reaction-bonded boron carbide/magnesium-silicon composites",

abstract = "Reaction-bonded boron carbide was manufactured by infiltrating porous boron carbide preforms at 1273 K with a Mg-Si eutectic alloy. The resulting composite material consists, in addition to the original B4C, of SiC, Mg 2Si, and a Mg-rich complex boride/carbide Mgx(Al,Si) y(B,C)z phase. The composites display high hardness (1700 HV), Young's modulus (356 MPa) and a moderate bending strength (230 MPa). The ballistic efficiency (of about 6.7), as determined by the depth of penetration method, is much higher than that of alumina and similar to that of silicon-infiltrated reaction-bonded composites.",

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AU - Cafri, Matan

AU - Malka, Alon

AU - Dilman, Helen

AU - Dariel, Moshe P.

AU - Frage, Nahum

PY - 2014/3/1

Y1 - 2014/3/1

N2 - Reaction-bonded boron carbide was manufactured by infiltrating porous boron carbide preforms at 1273 K with a Mg-Si eutectic alloy. The resulting composite material consists, in addition to the original B4C, of SiC, Mg 2Si, and a Mg-rich complex boride/carbide Mgx(Al,Si) y(B,C)z phase. The composites display high hardness (1700 HV), Young's modulus (356 MPa) and a moderate bending strength (230 MPa). The ballistic efficiency (of about 6.7), as determined by the depth of penetration method, is much higher than that of alumina and similar to that of silicon-infiltrated reaction-bonded composites.

AB - Reaction-bonded boron carbide was manufactured by infiltrating porous boron carbide preforms at 1273 K with a Mg-Si eutectic alloy. The resulting composite material consists, in addition to the original B4C, of SiC, Mg 2Si, and a Mg-rich complex boride/carbide Mgx(Al,Si) y(B,C)z phase. The composites display high hardness (1700 HV), Young's modulus (356 MPa) and a moderate bending strength (230 MPa). The ballistic efficiency (of about 6.7), as determined by the depth of penetration method, is much higher than that of alumina and similar to that of silicon-infiltrated reaction-bonded composites.

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Reaction-bonded boron carbide/magnesium-silicon composites

Abstract

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