Experiment on the Fabrication of the Ni-Fe Micro Structure

摘要

The artificial neural network (ANN) and Orthogonal experimental design was applied in the research of main process parameters of electroforming Ni-Fe microstructure. In order to obtain the suitable parameters of the deposit, an ANN with 3 layers was built and trained based on orthogoality experiment using back propagation algorithm. The characteristics of the micro electroforming process were analysed systematically. And the optimal process parameters to obtain Ni-20% Fe deposition was as following: FeSO_4·7H_2O concentration: 5.5 g/L; PH value of the solution: 2.5; current density: 3.5 A/dm~2; electrolyte temperature: 5°C. The results indicate that the Ni-Fe deposit is bright and compact. Electrodeposited Ni-20% Fe has a strong paramagnetic effect with the smallest value of remanence 0.036 mA·m~2 and the coercivity: 0.187 kA/m. The Ni-Fe micro electroplating process for the fabrication of microstructure was optimised.