An investigation on the effect of sintering mode on various properties of copper-graphene metal matrix composite

C. Ayyappadas; A. Muthuchamy; A. Raja Annamalai; Dinesh K. Agrawal

doi:10.1016/j.apt.2017.04.013

An investigation on the effect of sintering mode on various properties of copper-graphene metal matrix composite

C. Ayyappadas, A. Muthuchamy, A. Raja Annamalai, Dinesh K. Agrawal

Materials Research Institute (MRI)

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

98 Scopus citations

Abstract

The present work investigates the effect of sintering mode and graphene addition on the microstructural, mechanical and electrical properties of copper–graphene metal matrix composites reinforced with varying amounts (0.9, 1.8, 2.7 and 3.6 vol%) of graphene particles fabricated through powder metallurgy route. Sintering was carried out at 900 °C in 95%N₂-5%H₂ (forming gas) atmosphere with a heating rate of 5°/min for conventional and 20 °C/min for microwave with a holding time of 60 min in both cases. All the composites were found to couple well with microwave field and had resulted in 63% reduction in the processing cycle time as compared to the conventional process. Micro-structural analysis revealed the homogeneous distribution of graphene in copper matrix. Copper-graphene composites exhibited excellent wear resistance due to higher hardness and excellent lubricating nature of graphene. It was observed that porosity has a significant effect on the electrical conductivity values.

Original language	English (US)
Pages (from-to)	1760-1768
Number of pages	9
Journal	Advanced Powder Technology
Volume	28
Issue number	7
DOIs	https://doi.org/10.1016/j.apt.2017.04.013
State	Published - Jul 2017

All Science Journal Classification (ASJC) codes

General Chemical Engineering
Mechanics of Materials

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title = "An investigation on the effect of sintering mode on various properties of copper-graphene metal matrix composite",

abstract = "The present work investigates the effect of sintering mode and graphene addition on the microstructural, mechanical and electrical properties of copper–graphene metal matrix composites reinforced with varying amounts (0.9, 1.8, 2.7 and 3.6 vol%) of graphene particles fabricated through powder metallurgy route. Sintering was carried out at 900 °C in 95%N2-5%H2 (forming gas) atmosphere with a heating rate of 5°/min for conventional and 20 °C/min for microwave with a holding time of 60 min in both cases. All the composites were found to couple well with microwave field and had resulted in 63% reduction in the processing cycle time as compared to the conventional process. Micro-structural analysis revealed the homogeneous distribution of graphene in copper matrix. Copper-graphene composites exhibited excellent wear resistance due to higher hardness and excellent lubricating nature of graphene. It was observed that porosity has a significant effect on the electrical conductivity values.",

author = "C. Ayyappadas and A. Muthuchamy and {Raja Annamalai}, A. and Agrawal, {Dinesh K.}",

note = "Funding Information: The authors would like to acknowledge the RGEMS seed fund from VIT University, Vellore for support of this research work. Also, the authors acknowledge the DST-FIST available at VIT University, Vellore. Publisher Copyright: {\textcopyright} 2017 The Society of Powder Technology Japan",

year = "2017",

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AU - Muthuchamy, A.

AU - Raja Annamalai, A.

AU - Agrawal, Dinesh K.

N1 - Funding Information: The authors would like to acknowledge the RGEMS seed fund from VIT University, Vellore for support of this research work. Also, the authors acknowledge the DST-FIST available at VIT University, Vellore. Publisher Copyright: © 2017 The Society of Powder Technology Japan

PY - 2017/7

Y1 - 2017/7

N2 - The present work investigates the effect of sintering mode and graphene addition on the microstructural, mechanical and electrical properties of copper–graphene metal matrix composites reinforced with varying amounts (0.9, 1.8, 2.7 and 3.6 vol%) of graphene particles fabricated through powder metallurgy route. Sintering was carried out at 900 °C in 95%N2-5%H2 (forming gas) atmosphere with a heating rate of 5°/min for conventional and 20 °C/min for microwave with a holding time of 60 min in both cases. All the composites were found to couple well with microwave field and had resulted in 63% reduction in the processing cycle time as compared to the conventional process. Micro-structural analysis revealed the homogeneous distribution of graphene in copper matrix. Copper-graphene composites exhibited excellent wear resistance due to higher hardness and excellent lubricating nature of graphene. It was observed that porosity has a significant effect on the electrical conductivity values.

AB - The present work investigates the effect of sintering mode and graphene addition on the microstructural, mechanical and electrical properties of copper–graphene metal matrix composites reinforced with varying amounts (0.9, 1.8, 2.7 and 3.6 vol%) of graphene particles fabricated through powder metallurgy route. Sintering was carried out at 900 °C in 95%N2-5%H2 (forming gas) atmosphere with a heating rate of 5°/min for conventional and 20 °C/min for microwave with a holding time of 60 min in both cases. All the composites were found to couple well with microwave field and had resulted in 63% reduction in the processing cycle time as compared to the conventional process. Micro-structural analysis revealed the homogeneous distribution of graphene in copper matrix. Copper-graphene composites exhibited excellent wear resistance due to higher hardness and excellent lubricating nature of graphene. It was observed that porosity has a significant effect on the electrical conductivity values.

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An investigation on the effect of sintering mode on various properties of copper-graphene metal matrix composite

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