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Information × Registration Number 0211U000935, 0109U006735 , R & D reports Title Application of hydrogen technologies for producing of ferromagnetic materials powder with narrow particle size distributions popup.stage_title Head Bulyk Ihor Ivanovych, Доктор технічних наук Registration Date 09-03-2011 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 The formation of homogenized Nd2Fe14B-based ferromagnetic alloys structure with grain size of ferromagnetic phase in range 0.3-30 µ by HDDR-process have been confirmed. The parameters of process are: hydrogen pressure during HD equal 0.1 MPa, DR temperature equal 950 °С, time of reaction equal 4.5 h. Fine powders with 3 µ particle size have been produced by planetary ball milling of hydride of alloy. 80 % of powder particles have 4 µ sizes. Milling terms: milling frequency equal 300-400 rpm, milling time - up to 30 min, medium - acetone. Disproportionation by hydrogen mill and recombination can be rout for producing of fine ferromagnetic alloy powders with sharp particle size distribution. Product Description popup.authors Дмитришин Микола Степанович Каганяк Лідія Йосипівна Пилат Михайло Володимирович Тростянчин Андрій Миколайович popup.nrat_date 2020-04-02 Close