Patent ID: 6926777

Claim:
A process for the production of permanent magnets which contain a phase having the composition RE 2 T 14 B, where T is at least one element selected from the group of elements consisting of Fe and Co, comprising: production of a powder of an alloy containing at least one rare earth, pressing of the powder to form pressed parts, joining together of the pressed parts utilizing raised areas and indentations formed on the surface of the pressed parts to form a green compact, and sintering of the green compact, with the rare earth content of the permanent magnet being 1% to 5% by weight greater than the stoichiometric rare earth content of the hard-magnetic phase of the composition RE 2 T 14 B and being less than or equal to 33.4% by weight, and a liquid phase, which connects the pressed parts to one another, being formed during the sintering.