TY - JOUR
T1 - Powder injection molded nano copper oxide grafted graphene reinforced copper matrix composites
AU - Naseer, Abqaat
AU - Ahmad, Faiz
AU - Ali, Saad
AU - Haider, Waseem
N1 - Funding Information:
The authors acknowledge the processing facilities of Advanced and Functional Materials, Corrosion Research Centre, Department of Mechanical Engineering, Universiti Teknologi PETRONAS and Universiti Teknologi PETRONAS , Malaysia for providing financial support under Grant No: 0153-AA-G28 .
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/1
Y1 - 2022/1
N2 - The challenges associated with inhomogeneous distribution, poor interfacial interaction, and agglomeration of graphene sheets in sintered metal composites restrict its effectiveness in improving mechanical and physical properties. This study devised a grafting protocol for attachment of metal oxides on graphene nanoplatelets (GNPs) to investigate its effect on dispersion and interaction with Cu matrix. GNPs were sonicated to enhance its functionalization without a considerable change in defect ratio followed by grafting of Cu2O nanoparticles on GNPs employing a co-precipitation protocol. XPS, Raman spectroscopy, XRD, FTIR, FESEM confirmed the successful growth of homogenously distributed Cu2O nanoparticles on GNPs. Subsequently, the interaction of Cu2O grafted GNPs with copper matrix was explored using powder injection molding (PIM). Microstructural analysis showed restricted agglomeration, improved distribution of GNPs in copper matrix, and most importantly, bridged interaction between bulk copper and graphene in sintered samples. Furthermore, the densification can still be improved by optimizing the sintering process.
AB - The challenges associated with inhomogeneous distribution, poor interfacial interaction, and agglomeration of graphene sheets in sintered metal composites restrict its effectiveness in improving mechanical and physical properties. This study devised a grafting protocol for attachment of metal oxides on graphene nanoplatelets (GNPs) to investigate its effect on dispersion and interaction with Cu matrix. GNPs were sonicated to enhance its functionalization without a considerable change in defect ratio followed by grafting of Cu2O nanoparticles on GNPs employing a co-precipitation protocol. XPS, Raman spectroscopy, XRD, FTIR, FESEM confirmed the successful growth of homogenously distributed Cu2O nanoparticles on GNPs. Subsequently, the interaction of Cu2O grafted GNPs with copper matrix was explored using powder injection molding (PIM). Microstructural analysis showed restricted agglomeration, improved distribution of GNPs in copper matrix, and most importantly, bridged interaction between bulk copper and graphene in sintered samples. Furthermore, the densification can still be improved by optimizing the sintering process.
KW - Copper matrix composites
KW - CuO grafted graphene nanoplatelets
KW - Interfacial interaction
KW - Powder injection molding
UR - http://www.scopus.com/inward/record.url?scp=85122615706&partnerID=8YFLogxK
U2 - 10.1016/j.powtec.2021.117101
DO - 10.1016/j.powtec.2021.117101
M3 - Article
AN - SCOPUS:85122615706
VL - 397
JO - Powder Technology
JF - Powder Technology
SN - 0032-5910
M1 - 117101
ER -