Jacob Bogatin AbstractA permanent magnet is provided which is comprised of, by atomic percent:
10-24% R; 2-28% boron, 0.1-18.12% hydrogen; and balance being M. R is at
least one element selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy,
Ho, Er, Tm, Yb, Lu, Y and Sc, and M is at least one metal selected from
Fe, Co, Ni, Li, Be, Mg, As, Si, Ti, V, Cr, Mn, Cu, Zn, Ga Ge, Zn, Nb, Mo,
Ru, Rh, Pd, Ag, Sb, Te, Hf, Ta, W, Re, Os, Ir, Pt, Au, and Bi. A process
for producing the rare earth element-metal-hydrogen boron magnets is also
disclosed wherein the magnetic materials are treated in an atmosphere
having partial pressures of hydrogen containing gas at temperatures below
the phase transformation temperature of the rare earth element-metal
hydrides prior to sintering.

 

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