Fabrication of Cu-Ni composite material by electrolytic deposition

Devices that operate under high-speed deformation conditions are used in civil and military industries. A key component of these products is the shaped charge liners, the materials for the manufacture of which must have high plasticity to ensure the integrity of the jets formed during explosive loading. The purpose of the work is to analyze the research results on the influence of materials' nature and shaped charges liner producing technologies on their high-speed deformation, and the creation of a reinforced composite material with a copper matrix to manufacture a complex thin-walled shape product. To achieve the goal, copper electrodeposition was used as the most effective method for obtaining thin-walled liners. It was established that the concentration of the CuSO4 solution of 0,8 mol/l, the current density from 0.06 to 0.1 A/cm2 and the duration of electrodeposition of 3 h are the optimal parameters of copper electrodeposition process on the nickel mesh. Composite material microstructure analysis showed that the initially deposited copper repeats the shape and dimensions of the nickel mesh as a substrate, but the mesh holes do not grow. To increase the density and integrity of the copper composite reinforced with nickel fibers, additional pressing was carried out in steel molds. This operation was combined with calibration and providing precise (not less than 0,1 mm) dimensions and shape to a thin-walled product with a density uniformity of not less than 1 % by volume. It was established that during plastic deformation, the gaps between the particles of copper deposited on the nickel surface are filled and a solid material is formed. An experimental sample of a conical shaped charge liner made of copper-nickel composite material has been manufactured for further research.