Hot rolling of MWCNTs reinforced Al matrix composites produced via spark plasma sintering

Enhanced Mechanical Properties of Carbon Nanotube/Aluminum Composites Fabricated by Powder Metallurgical and Repeated Hot-Rolling Techniques

“…It can be seen in Figure 10 (tensile stress-strain curves) that the composites with sonication time of 4 h showed the largest elongation in the tensile test samples. This result is of much interest because some literature has reported that higher CNT content leads to lower toughness and lower ductility of the composites [10]. It is considered that plastic deformation such as rolling, extrusion, and drawing forms a strong texture, while hot rolling possibly causes dynamic recovery and recrystallization in such composites.…”

“…The enhanced strength of the nanocomposites can be attributed to the stronger diffusional bonds and homogeneous distribution of CNTs in the Al matrix. It has been reported that homogenously distributed CNTs in an Al matrix can act as reinforcements to effectively prevent dislocation movement [10].…”

“…Uniform dispersion of CNT can be improved by plastic deformation after powder metallurgical processing. The post-processing could improve the interfacial bonding through the elimination of the residual pores and voids, enhancement of metal-CNT interfacial bonding, breakage of CNT clusters, and strengthening the alignment of CNTs [10]. It is considered that porosity in the composites can degrade mechanical properties, so it is effective to strengthen the interfacial bonding and enhance the densification by post-processing.…”

“…Some researchers [11][12][13] have reported that hot extrusion and equal channel angular pressing (ECAP) were useful post-sintering processes to enhance the bonding strength between Al powders and improve dispersibility of the CNTs in Al matrix. Hot rolling can also be a candidate for this purpose to obtain flat or plate-shape samples [10].…”

2D Dual Anisotropic Conductive Janus Nanostrips Array Pellicle and Derivative 3D Janus‐structural Pipe Concurrently Endowed with Magnetism and Red‐green Two‐colored Fluorescence

“…With the continuous demand for integrated and portable nanodevices, functional materials with single-performance and large-size are gradually unable to meet the developing requirements of devices, and thus the realization of multiple properties in one material has been widely concerned by researchers, and the material with multiple properties has wide applications in many fields [1][2][3][4] Anisotropic materials can obtain different functions in different direction , [5,6] Anisotropic conductive film (ACF) has been used in many fields on account of their copacetic mechanical capacity, high electrical conductivity [7][8][9] and environmental pollution-free, [10] such as, storage battery [11,12] wearable pressure sensors, [13] filtration separation, [14] transparency electrode materials, [15] etc. ACF is classified into different types.…”