The effect of an external magnetic field on the dealloying process of the Ni–Al alloy in alkaline solution

Abstract

Our work investigates the effect of an external magnetic field on different dealloying stages of the formation of a nanoporous magnetic material. The magnetic field first prolongs the Ni rearrangement process at a low magnetic flux density, whereas the trend is reversed and the Ni rearrangement process is shortened at a higher magnetic flux density. The much finer morphology of nanoporous Ni can be prepared by adjusting the external magnetic flux density.