Crystallographic Texture in Pulse Current Electroforming of Nickel

Nickel deposits are rather seldom randomly oriented; they usually exhibit a column-like orientation with a definite [hkl] axis along the electric field direction in the electroforming process. However, up to present, most of the studies in electroforming nickels are still using a nickel sulfate bath which is now not commonly used in precise-electroforming or micro-electroforming. In this paper, an experimental investigation on the effect of pulse current on texture in micro-electroforming nickel has been carried out using a nickel sulphamate bath. It was reported that strong and weak [100] texture were formed at different pulse current conditions. These phenomena were considered to be related to the change of the amount of inhibiting chemical species at different conditions.