Study on influencing factors of nickel quality in diamond micropowder electroplating
Diamond micropowder is easy to float in the plating solution,which makes electroplating difficult.To optimize the nickel plating on diamond micro-powder process,the influence of the rotating speed of the plating bottle and the electroplating current on the quality of nickel electroplating of diamond micropowder were studied.Through theoretical analysis of the motion state of diamond micropowder particles at different rotational speeds of the plating bottle,a method for adjusting the rotating speed of the plating bottle is obtained,and the adjustment range of the rotating speed of the plating bottle at different plating currents is determined by experiments.The effect of electroplating current on the weight gain rate,morphology and density of the coating was studied by single factor experiment.The results show that the speed of the electroplating bottle gradually increases from small to large in the range of 1～7 r/min,and the electroplating current cannot exceed 3.0 A,which can better realize the electroplating of diamond micropowder nickel.When the plating current is 0.5 A,the plating layer is weightless,and there is obvious deplating phenomenon,and there is a small part of the leakage of the plating layer when the plating current is 1.0 A,and the plating layer is completely wrapped when the plating current is 1.5～2.5 A,basically no leakage plating;at 1.0～2.5 A,with the increase of electroplating current,the weight gain rate of the coating gradually increases,and the density of the coating gradually decreases.Nickel plating of diamond micropowder is carried out by using the method of low rotating speed and low current,and gradually increasing the rotating speed of the electroplating bottle.When the rotating speed of the plating bottle is 1～7 r/min and the plating current is 1.5～2.5 A,the quality of nickel plating of diamond micropowder is better.
diamond micropowderelectroplating nickelrotating speed of plating bottleplating currentplating quality
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万方数据
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