The relationship between the composition, coating
microstructure and electromagnetic properties of
electroforming Ni-Fe alloys was studied in this paper. And
the optimal process parameters to obtain Ni-20%Fe
deposition was as following: FeSO4·7H20 concentration was
6g/L; PH value of the solution was 2.5; current density was
3.5A/dm2; electrolyte temperature 55. The results indicate
that the Ni-Fe deposit is bright and compact, the crystalplanes
of the plating were (111), (220) and (200).
Electrodeposited Ni-20%Fe has a strong paramagnetism
effect with the smallest remanence of 0.5 emu, The
coercivity show a monotonic decrease with increasing Fe
content in deposit, and the saturation magnetization was
only 10% of that of the IJ85 permalloy, which proved that
the electroformed Ni-20%Fe alloy has good electromagnetic
property and could be used in MEMS actuator
manufacturing.
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