Study of Processing and Microstructure of Copper Composite Reinforced with Graphene Nanosheet by Powder Metallurgy Technique

• Published in: Powder metallurgy and metal ceramics Vol. 56; no. 9-10; pp. 523 - 534
• Main Authors: Vijay Ponraj, N., Azhagurajan, A., Vettivel, S. C., Sahaya Shajan, X., Nabhiraj, P. Y.
• Format: Journal Article
• Language: English
• Published: New York Springer US 2018; Springer; Springer Nature B.V
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Compression tests; Compressive properties; Copper; Fourier transforms; Glass; Graphene; Graphite; Heat treatment; Infrared spectra; Infrared spectroscopy; Materials Science; Mechanical properties; Metal powders; Metallic Materials; Methods; Microstructure; Nanosheets; Natural Materials; Powder metallurgy; Powdered metal products; Raman spectra; Scanning electron microscopy; Transmission electron microscopy; X-ray diffraction; copper; powder metallurgy; sintering; HRSEM; GNS; FTIR
• ISSN: 1068-1302; 1573-9066
• DOI: 10.1007/s11106-018-9925-9

Copper (Cu) composite reinforced with graphene nanosheet (GNS) is obtained by powder metallurgy technique. The microstructure and mechanical properties were investigated based on the Cu composite reinforced with various GNS content (0, 1, and 2 wt.%). The characterization is carried out through Raman spectra (RS), Fourier transform infrared (FTIR), X-ray diffraction (XRD), high resolution scanning electron microscopy (HR-SEM), and transmission electron microscopy (TEM). The results show that GNS is uniformly dispersed in the Cu particle. Raman spectra and FTIR demonstrate the reduction of GNS from Graphene oxide (GO) oxide in GNS after heat treatment at 550 and 650°C. The TEM analysis confirms GNS to be 3–5 nm in size. During compression tests, the Cu–2 wt.% GNS composite demonstrates 9% higher compressive stress compared to pure Cu.