Fe–Cu Nanocomposites by High Pressure Consolidation of Powders prepared by Electric Explosion of Wires

Abstract

In the present paper, preparation of nanocomposite powders of mutually immiscible Fe and Cu metals with different Fe-to-Cu ratios by electric explosion of wires and their processing into bulk materials are reported. Near-fully dense nanocrystalline Fe–Cu specimens with high compressive and bending strengths are obtained by high pressure consolidation/cold sintering of the electrically exploded powders at 3 GPa. Reduction treatment in an H₂-flow prior to consolidation results in an intimate contact between the oxide free powder surfaces and in an excellent inter-particle bonding integrity. The Cu-rich composition exhibits an attractive combination of high strength and relatively low electrical resistivity.

Original language	English
Article number	1701024
Journal	Advanced Engineering Materials
Volume	20
Issue number	8
DOIs	https://doi.org/10.1002/adem.201701024
Publication status	Published - 1 Aug 2018

Keywords

bimetal Fe-Cu nanoparticles
electric explosion of wires
high pressure consolidation/cold sintering
immiscible metalls
nanocomposite powders

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

Access to Document

10.1002/adem.201701024

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Fe–Cu Nanocomposites by High Pressure Consolidation of Powders prepared by Electric Explosion of Wires. / Lerner, Marat I.; Psakhie, Sergey G.; Lozhkomoev, Aleksandr S.; Sharipova, Aliya F.; Pervikov, Alexander V.; Gotman, Irena; Gutmanas, Elazar Y.

In: Advanced Engineering Materials, Vol. 20, No. 8, 1701024, 01.08.2018.

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

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abstract = "In the present paper, preparation of nanocomposite powders of mutually immiscible Fe and Cu metals with different Fe-to-Cu ratios by electric explosion of wires and their processing into bulk materials are reported. Near-fully dense nanocrystalline Fe–Cu specimens with high compressive and bending strengths are obtained by high pressure consolidation/cold sintering of the electrically exploded powders at 3 GPa. Reduction treatment in an H2-flow prior to consolidation results in an intimate contact between the oxide free powder surfaces and in an excellent inter-particle bonding integrity. The Cu-rich composition exhibits an attractive combination of high strength and relatively low electrical resistivity.",

keywords = "bimetal Fe-Cu nanoparticles, electric explosion of wires, high pressure consolidation/cold sintering, immiscible metalls, nanocomposite powders",

author = "Lerner, {Marat I.} and Psakhie, {Sergey G.} and Lozhkomoev, {Aleksandr S.} and Sharipova, {Aliya F.} and Pervikov, {Alexander V.} and Irena Gotman and Gutmanas, {Elazar Y.}",

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AU - Lerner, Marat I.

AU - Psakhie, Sergey G.

AU - Lozhkomoev, Aleksandr S.

AU - Sharipova, Aliya F.

AU - Pervikov, Alexander V.

AU - Gotman, Irena

AU - Gutmanas, Elazar Y.

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AB - In the present paper, preparation of nanocomposite powders of mutually immiscible Fe and Cu metals with different Fe-to-Cu ratios by electric explosion of wires and their processing into bulk materials are reported. Near-fully dense nanocrystalline Fe–Cu specimens with high compressive and bending strengths are obtained by high pressure consolidation/cold sintering of the electrically exploded powders at 3 GPa. Reduction treatment in an H2-flow prior to consolidation results in an intimate contact between the oxide free powder surfaces and in an excellent inter-particle bonding integrity. The Cu-rich composition exhibits an attractive combination of high strength and relatively low electrical resistivity.

KW - bimetal Fe-Cu nanoparticles

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