INVESTIGATION OF THE STRUCTURE OF A TWO-PHASE MAGNETIC MATERIAL BASED ON SILICON ELECTRICAL STEEL

Abstract

Further development of electrical machines is impossible without the development and implementation of new promising materials with new properties. One of these materials is a two-phase magnetic material, which contains both magnetic and non-magnetic phases, and allows you to control the direction of the magnetic flux. The article presents the results of a study of the structure of a two-phase magnetic material based on silicon electrical steel 2421, obtained by ion-plasma nitriding. The article briefly describes the approach used and the progress of the work. The selection of parameters of the vacuum medium is presented with an indication of the quality of the result of processing, depending on the selected parameters of the vacuum medium, and the optimal parameters of the gas medium are determined, at which successful processing of the surface of the samples occurs during long exposure. The results of processing samples of electrical silicon electrical steel 2421 using ion-plasma nitriding with separation into magnetic and non-magnetic phases are presented. The structure of the samples was checked using an X-ray diffractometer with the determination of the composition of the surface layer of the treated samples. Determination of the thickness of the treated layer was carried out using an optical microscope. It has been established that with an increase in the exposure time, both the thickness of the treated layer and the content of the non-magnetic phase in the treated area increase. It is noted that, in addition to the formation of the treated layer, it contains various phases: in addition to the formation of a non-magnetic phase, the formation of compounds that are a magnetic phase was noted.