Abstract:

In order to overcome the disadvantages of the traditional jet electrodeposition,a novel friction-aided technology was proposed. To make a comparison,nickel deposition layers were prepared by using the proposed and the traditional technologies,respectively. Afterwards,the microstructure,surface morphology,microhardness and magnetic properties of the layers were investigated by means of XRD,TEM,microhardness test and vibrating-sample magnetic strength test. The results show that the friction-aided technology helps to prepare electrodeposition layer with smooth and bright surface and well-organized structure,that the deposited nickel layers are all in nano-crystalline microstructure whose average size ( about 10 nm) is far less than that prepared by the traditional jet electrodeposition technology,and that the friction helps to refine the grains,improve the microstructure,increase the hardness of the deposited layer,and greatly change the magnetic properties of the deposited layers.

Key words: jet electrodeposition, friction, nano-crystalline, nickel, micro-appearance, magnetic property