Effect of sintering temperature on grain growth and mechanical properties of copper/graphene nanosheet composite

Swikker, K. Robinston Jeyasingh; Kanagasabapathy, H.; Manickam, I. Neethi; Nadar, N. Vijay Ponraj; Alwin, S.

doi:10.1016/j.diamond.2020.108111

Cited by 12 publications

(2 citation statements)

References 39 publications

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“…For this sintering temperature, the highest values of relative density above 90%, low porosity, and a higher Young's modulus in the range (92-96%) were achieved. Increasing the sintering temperature is beneficial because a higher temperature accelerates atomic diffusion and increases the migration rate of grain boundaries, which in turn promotes a reduction of pore size and an improvement in density [56,57]. This is consistent with the results of other works [33,58,59].…”

Section: Characterisation Of Sintered Cu-zrb2 Compositessupporting

confidence: 90%

Processing and Properties of ZrB2-Copper Matrix Composites Produced by Ball Milling and Spark Plasma Sintering

Sulima,

Boczkal

2023

Materials

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Copper matrix composites with zirconium diboride (ZrB2) were synthesised by ball milling and consolidated by Spark Plasma Sintering (SPS). Characterisations of the ball-milled composite powders were performed by scanning electron microscopy (SEM), X-ray diffraction, and measurement of the particle size distribution. The effect of the sintering temperature (1123 K, 1173 K, and 1223 K) and pressure (20 MPa and 35 MPa) on the density, porosity, and Young’s modulus was investigated. The relationship between the change of Orb content and physical, mechanical, and electrical properties was studied. Experimental data showed that the properties of Cu–Orb composites depended significantly on the SPS sintering conditions. The optimal sintering temperature was 1223 K with a pressure of 35 MPa. Composites exhibited a high degree of consolidation. For these materials, the apparent density was in the range of 93–97%. The results showed that the higher content of Orb in the copper matrix was responsible for the improvement in Young’s modulus and hardness with the reduction of the conductivity of sintered composites. The results showed that Young’s modulus and the hardness of the Cu 20% Orb composites were the highest, and were 165 GPa and 174 HV0.3, respectively. These composites had the lowest relative electrical conductivity of 17%.

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Section: Characterisation Of Sintered Cu-zrb2 Compositessupporting

confidence: 90%

Processing and Properties of ZrB2-Copper Matrix Composites Produced by Ball Milling and Spark Plasma Sintering

Sulima,

Boczkal

2023

Materials

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“…1,2 Graphene (Gr), along with Gr derivatives like Gr oxide (GO), reduced GO (rGO), Gr nanosheets (GNSs), and Gr nanoplates (GNPs) are relatively novel solutions for use as reinforcement agents in metal matrix composites (MMCs) like CuMCs and W-Cu MCs to enhance the microstructure homogeneity, together with an increase in mechanical, electrical, thermal, electrochemical, and functional properties. [26][27][28][29][30][31][32][33][34][35][36] Graphene is a carbon allotrope that comprises a monolayer of sp 2 -hybridized C atoms placed in a 2D hexagonal lattice with one atom thickness of around 0.35 nm. 37 Graphene is commonly synthesized by mechanical cleaving (exfoliation), chemical synthesis by reduction of graphite oxide, thermal CVD, and plasma enhanced CVD methods.…”

Section: Introductionmentioning

confidence: 99%

Graphene and its derivative reinforced tungsten–copper composites for electrical contact applications: A review

Lungu¹,

Barbu²

2022

Journal of Reinforced Plastics and Composites

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This review summarizes the advancement on sintered composites based on tungsten–copper (W–Cu) reinforced with graphene (Gr) or its derivative such as reduced Gr oxide (rGO) for use as electrical contacts applied in switching devices. Main synthesis approaches for preparing Gr or rGO reinforced W–Cu composite powders and their consolidations by using various powder metallurgy techniques are presented. The nature of the initial materials, synthesis conditions, processing parameters, and the relevant findings are disclosed and discussed. The improvement in microstructure and technical characteristics like density, electrical conductivity, hardness, coefficient of friction, wear rate, and arc ablation behavior of W–Cu–Gr/rGO composites are highlighted comparatively with that of unreinforced composites. This review reveals an insight into a novel class of composites as candidates for electrical contact applications.

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Characteristics Investigation on Aluminium/Diamond Composites Fabricated Through Powder Metallurgy

Robinston Jeyasingh Swikker,

Balakrishnan,

Kanagasabapathy

et al. 2023

Trans Indian Inst Met

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Effect of sintering temperature on grain growth and mechanical properties of copper/graphene nanosheet composite

Cited by 12 publications

References 39 publications

Processing and Properties of ZrB2-Copper Matrix Composites Produced by Ball Milling and Spark Plasma Sintering

Processing and Properties of ZrB2-Copper Matrix Composites Produced by Ball Milling and Spark Plasma Sintering

Graphene and its derivative reinforced tungsten–copper composites for electrical contact applications: A review

Characteristics Investigation on Aluminium/Diamond Composites Fabricated Through Powder Metallurgy

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