Nickel Electroplating on Surface of Electroless Ni-P Plated Quartz Optical Fiber

Electroplating method was used to prepare a thick nickel layer on the Ni-P coating deposited on the surface of quartz optical fiber.The effects of the concentrations of nickel sulfate and sodium dodecyl sulfate and current density on the nickel deposition rate and coating quality were mainly investigated and the their suitable values were determined.The rare earth of lanthanum oxide(La2O3) with mass concentration of 1.5g·L-1 was added into the Watt electroplating bath to improve the electroplating effect.Scanning Electron Microscopy and Stereomicroscope were employed to characterize and analyze the surface morphology of the prepared thick Ni layer.The results showed that the addition of rare earth La2O3 in Watt bath reduced the metal grain size and improved the densification of the metal layer and made the sample(thickness of about 800μm) have high hardness,strong adhesion,low resistivity,high density and good solderability.