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Improvement of interfacial bonding in carbon nanotube reinforced Fe-50Co composites by Ni-P coating: Effect on magnetic and mechanical properties

Mani, Mahesh Kumar, Viola, Giuseppe, Reece, Mike J., Hall, Jeremy Peter and Evans, Samuel Lewin 2014. Improvement of interfacial bonding in carbon nanotube reinforced Fe-50Co composites by Ni-P coating: Effect on magnetic and mechanical properties. Materials Science and Engineering: B 188 , pp. 94-101. 10.1016/j.mseb.2014.06.009

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Abstract

Fe–50Co matrix composites containing 1.5 and 3 vol% of electroless Ni–P plated carbon nanotubes (CNTs) were densified using spark plasma sintering. The powder mixtures for the composites were prepared by two different routes: (a) ultrasonication only; and (b) ultrasonication followed by dry ball milling. Drying of the Ni–P plated CNTs under atmospheric conditions in the presence of ethanol promoted the nucleation and growth of graphene oxide on the coating. The ball milling route was found to be the most efficient method to disperse the coated nanotubes uniformly in the matrix. The addition of coated CNTs, which formed Taenite phase with the matrix alloy, made the composites to exhibit: (a) higher ductility, higher flexural strength, lower coercivity (Hc) and lower saturation induction (Bsat) compared to the monolithic material; and (b) higher ductility, higher flexural strength, higher Hc and lower Bsat in relation to the material with similar amount of bare CNTs.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TJ Mechanical engineering and machinery
Uncontrolled Keywords: Carbon nanotubes; Graphene oxide; Coating; Metal matrix composites; Spark plasma sintering; Mechanical properties
Publisher: Elsevier
ISSN: 0921-5107
Last Modified: 21 Feb 2019 14:32
URI: http://orca.cf.ac.uk/id/eprint/64497

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