Enhancement of electrical properties of cold welding doped using CNTs

Carbon nanotubes (CNT) have represented a revolution in the nanotechnology field, offering exceptional chemical and physical properties. Among these properties, CNTs offer superior electrical conductivity and flexibility. The mix of characteristics make CNTs perfect candidates for advances in energy storage, flexible electronics, and microelectronics. In the welding field, CNTs have been of great interest as additives to improve welded joints properties. Cold welding has benefited from CNTs. This technique, unlike traditional welding, has the advantage of avoiding thermal deformations and offers the possibility of joining dissimilar materials. However, these types of joints generally have inferior electrical properties. This work investigates how CNT doping affects the electrical properties of cold-welded joints. A four-point probe analysis was used to evaluate the electrical properties of CNT-doped cold-welded joints. The results show an improvement in electrical conductivity and energy storage capacity of CNT-doped cold-welded joints, compared to undoped joints.