Impact of ZrO2 reinforcement on the surface roughness, electrical and magnetic properties of the nano-permalloy

Abstract

Ni-Fe alloy and Ni-Fe/ZrO2 nanocomposite, electro co-deposited from ethylene glycol bath, were evaluated in terms of magnetic, electrical, surface roughness and corrosion resistant properties. The properties of the nanocomposite coating were found to mainly depend on the ZrO2 particle content of the coatings. The surface of the Ni-Fe/ZrO2 nanocomposite coating was found to be smoother and more resistant to corrosion than the alloy because of the inert nature of the embedded ceramic particles. The electrical resistivity of the electro deposits increased with the increasing content of the ZrO2 particles in the coating. Magnetic studies revealed that the composite coatings have very small magnetic remanence and coercivity. Saturation magnetization (Ms) of the composite was reduced after incorporation of nonmagnetic ZrO2 nanoparticles in the Ni-Fe alloy matrix. © 2019 The Korean Society for Composite Materials and IOP Publishing Limited