A novel copper-matrix composite with fullerene soot nanoparticles produced by molecular level mixing

Bobrynina, Elizaveta; Larionova, Tatiana; Koltsova, Tatiana S.; Shamshurin, A. I.; Толочко, О. В.

doi:10.1016/j.matlet.2021.130514

Cited by 4 publications

(3 citation statements)

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“…To prepare composite powder via molecular level mixing, first, FS suspension of assigned concentration was prepared in a copper nitrate solution (FS was precoated with sodium lauryl sulfate in order to improve the carbon wettability with a solution), then, the suspension was sprayed with compressed air on a Spray Dryer B-290 (BUCHI, Flawil, Switzerland) at a temperature of 150-200 • C, with a solution feed rate of 5 mL/min. Further, the resulting powder was annealed at 400 • C in an oxidizing atmosphere for 60-120 min to obtain a CuO-FS powder, and then the oxide was reduced to copper in a hydrogen atmosphere at 550 • C for 120 min [11]. For the reference, the samples of pure copper without additives were prepared by the two considered methods using described modes.…”

Section: Methodsmentioning

confidence: 99%

“…The samples were compacted by cold pressing at a pressure of 400 MPa, followed by hot pressing at 750 • C and a pressure of 200 MPa [10,11]. The density of the composites was determined by Archimedes' principle.…”

Section: Methodsmentioning

confidence: 99%

“…In previous works [10,11], we showed the possibility of obtaining composite materials of the Cu-fullerene soot (FS) system with physical and mechanical characteristics at the level of copper-CNTs materials. Fullerene soot is a mixture of fullerenes with amorphous carbon and has a lower cost compared to pure fullerenes and CNTs.…”

Section: Introductionmentioning

confidence: 99%

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Thermal Conductivity of Composite Materials Copper-Fullerene Soot

et al. 2022

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Copper-based composites strengthened with fullerene soot nanoparticles of 20–30 nm size in concentration up to 23 vol.% were prepared via two methods: mechanical mixing and molecular level mixing. The dependence of thermal conductivity on the carbon concentration was studied. Maxwell’s model describes well the change in the thermal conductivity of the composite obtained by molecular level mixing. However, thermal conductivity of the composite produced by mechanical mixing is significantly lower than the calculated values, due to structural inhomogeneity and residual stresses. Comparison of the thermal conductivity of Cu-fullerene soot composites with that of Cu-based composites described in the literature showed that the prepared materials are not inferior in thermal conductivity to composites containing carbon nanotubes, despite the fact that fullerene soot has a much lower thermal conductivity.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%