Battery Steel Belt Of Ni-p Alloy Plating Process And The Performance Of The Research

In recent years, the Ni-P coating has the advantages of good corrosion resistance, and high hardness brightness. The Ni-P coating is applied to various industries, which is popular from aviation industry and microelectronics manufacturing. So the researchers devote to look for a high-quality alloy coating and the battery steel is also in the way. In order to obtain a better coating, the researchers use the pulse plating power, which has the advantages of a lower concentration polarization and increasing the electrochemical polarization.So using the pulse power is a new direction to improve the coating quality.In the article, in the system of phosphorous acid, it’s to take the way of pulse plating to electroplate the Ni-P alloy plating. The researchers use the electrochemical methods to study the corrosion of the Ni-P coating in the battery steel, such as single pulse plating Ni-P, double pulse plating Ni-P coating. In the solution of 3.5% Na Cl,1 mol/L H2SO4 and1 mol/L Na OH. Scanning Electron Microscope observes the surface topography. The researchers use the method of weight loss and we get the corrosion current density in the descending order. And in turn they are DC plating coating, single pulse plating and double pulse plating. DC plating coating has the worst corrosion.Which is the same as the method of weight loss.Three kind of battery steel is soaked in different solution, such as acid alkali and salt.They were all corroded. In alkaline solution and neutral solution, they had small area of corrosion. But in acid solution, hey had bigger area of corrosion. The results show that in acid solution they had the most serious corrosion.In the article, it takes three methods to get different battery steel. They are DC plating coating, single pulse plating and double pulse plating. DC plating coating has the most corrosion-resistant in the optimal experimental parameters.The average current density is2.5A/dm2 and the reaction temperature is 65 ℃.At last, p H is in 1.5-2.Single pulse plating has the most corrosion-resistant in the optimal experimental parameters. The average current density is 2.0A/dm2 andduty cycle is 0.3. The reaction temperature is 65℃。At last, p H is in 2.In this study, we use orthogonal method and the single factor method to get the experimental results, which is the best coating by double pulse plating. And finally we get the optimal experimental parameters. The forward conduction time is 15 ms and the reversing time is 10 ms.The forward off time is 85 ms,and the reversing off time is15 ms.The forward working time is 120 m and the Reversing working time is 30 ms.The average forward current density is 2A/dm2 and the reversing average current density is0.025 A / dm2.