Mechanical Property and Corrosion Behavior of Powder-Metallurgy-Processed 3D Graphene-Networks-Reinforced Al Matrix Composites

• Published in: Crystals (Basel) Vol. 13; no. 3; p. 485
• Main Authors: Zeng, Meng, Chen, Hongmei, Tao, Xiaoma, Ouyang, Yifang
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.03.2023
• Subjects: 3-dimensional graphene networks; Aluminum; Aluminum base alloys; Aluminum matrix composites; Carbon; Corrosion and anti-corrosives; Corrosion currents; Corrosion resistance; Corrosion tests; Densification; Ductility; Graphene; Graphite; Interfacial bonding; Mechanical properties; Metal powder products; Metal powders; Plasma sintering; Powder metallurgy; reinforcement; Sintering; Sintering (powder metallurgy); Spark plasma sintering; Tensile strength; Three dimensional composites; Yield stress; Beijing China; China
• ISSN: 2073-4352; 2073-4352
• DOI: 10.3390/cryst13030485

Three-dimensional graphene networks (3DGN) have the potential to be used as a reinforcement for aluminum matrix composites due to their unique wrinkled structure and cost-effectiveness. In this work, the mechanical properties and corrosion resistance of 3DGN in Al matrix were systematically investigated. 3DGN/Al composites with weight ratios of 0, 0.075, 0.150, 0.225, and 0.300 3DGN were prepared by powder metallurgy following by ball mill and spark plasma sintering. Results revealed that the densification of 3DGN/Al composites slightly decreases with the increase of 3DGN content. Increased hardness without loss of ductility was recorded compared to the pure aluminum sample prepared under the same experimental conditions. 3DGN/Al composites exhibit higher corrosion currents density than that of pure aluminum, which shows that the addition of 3DGN reinforcement aggravates the corrosion of aluminum. This study can be used as a reference for future research on the effect of graphene on the various properties of graphene-reinforced aluminum matrix composites.