Minitsky A. The development and properties of powder soft magnetic materials on base of composite iron powders for detailses of electrotechnical purpose

Object of a research - processes of deriving powder composite of soft magnetic materials on basis of iron. The purpose - development of composite powder soft magnetic materials with increased magnetic performances for work in constants and variable fields of industrial frequency. Methods - X-ray phase and microspectral analyses, metallographic and magnetometric of a research. Novelty of work - because of outcomes of researches is reasonable and experimentally founded the efficiency of use for deriving of sintered soft magnetic materials with increase a level of magnetic performances of iron powders cladded by Sn, Ni-P, P. In an outcome of a complex research of influence of the components of tin in a range of concentration (2-10 % mas.) on magnetic, electrical and mechanical properties of powder soft magnetic material because on base iron the component 6-8 % mas. is shown, that tin ensures increase of a denseness of a material at the expense of formation of a liquid phase for want of sintering and allows in 2-3 times to reduce magnetic losses of a material. Practical significance of outcomes of work - because of outcomes of researches the powder detailses of a type stator and curl of electric motors and anisotropic plates for grinding machine are made of the developed materials.The tests of powder curls have shown, that for want of identical potency and rotation rate of a curl, the torque is increased in 1,5 times, for want of it the mass of the electric drive with powder curls in 2,9-3 times is less serial. Tests of powder magnetic plates from anisotropic of soft magnetic materials have confirmed high efficiency of their use as electromagnetic clips and brake devices.