Preparation and properties of graphene nanoplatelets reinforced aluminum composites
| Autor: | Jian-chao Li, Lin Geng, Xiao-xia Yang, Xuexi Zhang, Zhong Zheng, Imran Muhammad |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Metals and Alloys chemistry.chemical_element Spark plasma sintering 02 engineering and technology 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure 01 natural sciences X-ray photoelectron spectroscopy chemistry Transmission electron microscopy Aluminium 0103 physical sciences Ultimate tensile strength Materials Chemistry Extrusion Composite material 0210 nano-technology Ball mill |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 31:878-886 |
| ISSN: | 1003-6326 |
| Popis: | 5.0 vol.% graphene nanoplatelets (GNPs) and aluminum powders were mixed to prepare GNPs/Al composites via high-energy ball milling (HEBM). The mixed powders were subjected to spark plasma sintering (SPS) and subsequent hot extrusion. The microstructure and mechanical properties of extruded composites were investigated by X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and tensile tests. In the extruded composites, 5.0 vol.% GNPs were dispersed homogeneously and no serious GNP−Al interfacial reaction occurred. As a result, the yield strength and ultimate tensile strength of the extruded GNPs/Al composites reached 462 and 479 MPa, which were 62% and 60% higher than those of the extruded Al matrix, respectively. The enhanced mechanical properties were attributed to the effective load transfer capacity of dispersed GNPs. This demonstrated that it may be promising to introduce dispersed high-content GNPs via HEBM, SPS and hot extrusion techniques and GNP−Al interfacial reaction can be controlled. |
| Databáze: | OpenAIRE |
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