The paper presents and summarizes some research on constant magnetic field effects in chemistry. Metals and alloys electrodeposited under constant magnetic field have greater thickness and smoother surface with finest grains. Metallic materials deposited under the influence of uniform magnetic field may have stronger corrosion resistance, than those obtained without the presence of magnetic field. Constant magnetic field also causes an increase of the electropolymerization rate and yield of some organic reactions. Our research also shows that the presence of constant magnetic field affects the electrodeposition process of alloys and their morphology to a great extent. The effects of magnetic field on metals, alloys, composites, polymers and other materials are due to the Lorentz force and the magnetohydrodynamic effect. It is possible that the further development of magnetoelectrodeposition will allow for using the constant magnetic field to improve the properties of metal coatings, alloys, polymers, and other materials in the industry.

The aim of this study was to investigate the effect of a constant magnetic field (CMF) on the electrodeposition of Co-Mo-W alloys, and to observe changes in the topography of the alloy surface and its chemical composition. The investigation included the use of Cyclic Voltammetry (CV), Coulometry (C), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Analysis (EDX). At higher electrolyte concentrations (so-called II), the CV method revealed an increase in cathode current density in a CMF environment. During crystallisation of the Co-Mo-W alloy, fractures appeared on the surface due to internal stresses. The application of CMF reduced the fracture widths resulting from the increased concentration of electroactive particles at the working electrode and the greater deposited alloy mass. Electrolyte motion under the influence of CMF caused an increase in the percentage of the main ferromagnetic component (Co) in the alloy.

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The significant acceleration in the Kabachnik–Fields reaction in an external magnetic field has been observed. The phenomenon is explained by the proper orientation of substrate molecules forced by external magnetic field. Diamagnetic dipoles are repulsed to the center by both electromagnet poles, being simultaneously arranged. This phenomenon may then promote the acceleration of the reaction.

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