Reparation And Properties Of Nickel-cobalt-graphene Nanocomposites

Metal matrix nanocomposites have excellent properties.Compared with common composite materials,Metal matrix nanocomposites have great potential in mechanical,electrical,thermal,chemical,and functional properties.For the preparation of Metal matrix nanocomposites,common methods such as highenergy ball milling,nanocomposite plating,and in-situ reaction methods are used.Among them,nano-composite plating has the advantages of easy control of process parameters,simple operation,and low cost.Compared with other preparation processes,it has low preparation temperature,can effectively avoid interfacial reactions,and better maintain the characteristics and structure of the substrate and the reinforcement.Size and other advantages have become the best choice for preparing multiple nanocomposites today.Metal nickel is the most widely used electroplating material in the electrodeposition process.At the same time,metal nickel has high wear resistance and corrosion resistance,and has important applications in the field of corrosion resistance.It shows ferromagnetism at room temperature.Metal nickel can be used for both the machining of highly precise parts and structural materials for special occasions.However,the hardness of the electrodeposited nickel coating is very low,so other reinforcing phases need to be added to the plating solution to improve the hardness and other special properties of the nickel coating,so that the prepared coating can meet higher working requirements.Nickel(Ni)-Cobalt(Co)and Nickel-Cobalt-Graphene Platelet(GPL)composite coatings were prepared by a DC electrodeposition process.Scanning electron microscopy(SEM)and super depth of field microscopy were used to observe the surface morphology of the composite material.The surface morphology of the coating was analyzed by energy spectroscopy(EDS)and Xray diffraction(XRD)on the composition of the composite material,nickel The preferred growth orientation and grain size were examined.The Raman spectra of the two coatings were used to characterize the defects and structural changes of graphene in the coatings.Finally,Vickers hardness tester,vibration sample magnetometer and electrochemical workstation were used to test the hardness,magnetic properties and corrosion resistance of the composite coating.The project successfully prepared multiple nano-composite coatings.The effects of the addition of cobalt ions and graphene on the surface morphology,microstructure,grain size,hardness,magnetic properties,and corrosion resistance of the composite coating were studied.The research on magnetic nano-film materials has certain reference value,and provides new ideas for the improvement of nano-composites.At the same time,it has been proved that the addition of graphene has greatly improved the corrosion resistance of the coating.This subject provides new ideas for improving the properties of electrodeposited graphene composites.