Open AccessChemical synthesis and research nanopowder of magnetic hard alloy Nd15Fe78B7
Author(s) -
O. E. Abdurakhmonov,
E. V. Yurtov,
Е. С. Савченко,
Alexander Savchenko
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1688/1/012001
Subject(s) - materials science , alloy , neodymium , stoichiometry , oxide , particle size , boron , precipitation , diffusion , iron oxide , analytical chemistry (journal) , metallurgy , particle (ecology) , chemical engineering , chemistry , laser , physics , oceanography , organic chemistry , chromatography , geology , meteorology , optics , thermodynamics , engineering
Hard magnetic nanopowders of the Nd 15 Fe 78 B 7 alloy were synthesized by the reduction-diffusion reaction of a stoichiometric mixture of Nd, Fe, and Fe-B oxides with CaH 2 in a hydrogen atmosphere at 800 ° C. Nd, Fe, Fe-B oxides were obtained by precipitation and had the form of granules with an average particle size of neodymium oxide - 50 nm, iron oxide - 95 nm, iron borate - 57 nm. The particle size of the Nd 15 Fe 78 B 7 alloy was 45-140 nm. It is shown that the proposed method is suitable for obtaining nanopowders of hard magnetic alloys of the Nd-Fe-B system.