Method of making a solid magnetic material from Sm.sub.2 Fe.sub. 17 N.sub. 3-X type intermetallic nitride powder

摘要

A method of making a solid magnetic material from Sm.sub.2 Fe. sub.17 N. sub.3-x type intermetallic nitride powder, where 0≦x≦1, comprises the following steps:PPa--the powder is mixed intimately with glass powder having a conversion temperature Tg between 260° C. and 310° C. and a softening temperature Tf less than 400° C., the proportion of glass powder being between 10% and 30% of the total volume;PPb--the mixture is compressed to obtain a solid;PPc--the solid obtained is subjected in a neutral gas atmosphere to a heat cycle during which a temperature not less than Tf+5° C. and not more than 420° C. is maintained for at least one hour.