jalur aluminium bersalut nikel

Nickel plated jalur aluminium

In the fast-growing electronics industry, jalur aluminium yang diperbuat daripada aluminium telah digunakan secara meluas. Namun begitu, aluminium mempunyai rintangan yang lemah terhadap kakisan asid dan alkali, dan hampir tidak boleh dipateri, yang sangat mengehadkan penggunaan dan pembangunan jalur aluminium. The best way to solve this problem is to use continuous nickel plating on aluminum strips. Namun begitu, the nickel-plated aluminum strips prepared by this method have poor processing performance such as bending resistance. In view of the shortcomings of continuous nickel plating on aluminum strips, this article improves the traditional nickel plating system, adds sodium citrate and other additives to the watt system, improves the plating parameters, and prepares a high elongation performance, good bending resistance, dan rintangan kakisan. Excellent nickel-plated aluminum strips that can be used in the electronics industry, and use SEM, XRD and other analytical methods to characterize the surface morphology, crystal structure and other microstructures of nickel-plated aluminum strips, and analyze the impact of nickel-plated aluminum strips from the perspective of microstructure. The root cause of elongation and corrosion resistance. The specific research contents are as follows: (1) before the aluminum strip is nickel-plated, pre-plating a copper pre-plated layer with a thickness of 0.5 μm can effectively improve the binding force of the nickel plating layer and the substrate; (2) the concentration of sodium citrate on nickel plating Influence of elongation and corrosion resistance of aluminum strip. The results show that when the concentration of sodium citrate in the solution is 40 g / L, the elongation of the nickel-plated aluminum belt is higher; when the concentration of sodium citrate is 60 g / L, the corrosion resistance of the nickel-plated aluminum belt is better; (3) When the sodium citrate concentration was 40g / L, the current density and the thickness of the nickel coating were changed. The effects of the current density and the thickness of the nickel coating on the elongation and corrosion resistance of the nickel-plated aluminum strip were studied. The results show that as the current density decreases, the elongation and corrosion resistance of the nickel-plated aluminum belt increase. When the current density is 2A / dm ~ 2, the elongation and corrosion resistance of the nickel-plated aluminum belt are the best; nickel plating The thinner the thickness, the higher the elongation of the nickel-plated aluminum strip, and the better the processability.