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Information × Registration Number 0218U000479, 0117U001506 , R & D reports Title Joint project: Nanostructured anisotropic sintered Sm2Co17-based magnets. Part 1. Optimization parameters of obtaining popup.stage_title Head Bulyk Ihor Ivanovych, Доктор технічних наук Registration Date 14-02-2018 Organization Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine popup.description2 Peculiarities of sintering of КС25 (Sm2(Co,Fe,Zr,Cu)17) alloy at low temperatures in hydrogen are a subject of the investigation. The aim of the research is to evaluate sintering parameters influence, at low temperatures, on sintered ferromagnetic materials properties for choosing an optimal regime of their production. Scanning electron microscopy, x-ray energy dispersive spectroscopy and software for calculation of structure' constituents were used. The variable parameters were: planetary mill rotating speed was 100, 200 and 300 rpm; time of milling was from 20 to 60 min; a medium of milling was hydrogen, acetone, and oleic acid; pressing pressure was 2 and 5 t/cm2; it was sintered by hydrogenation and disproportionation and hydrogenation, disproportionation, desorption and recombination. It was found that powder sizes increase, porosity diminishes and grain size of sintered materials increase when: rotary speed, milling time and pressing pressure increase, with changing milling medium in a row - hydrogen, acetone, oleic aside. The powder particles sizes influence on microstructure homogeneity was found: in sintered materials the large particles do not has fine microstructure in its whole volume. Product Description popup.authors Борух Ігор Володимирович Кононюк Олександр Петрович popup.nrat_date 2020-04-02 Close