Patent ID: 8216393

Claim:
A method for the production of a magnet core, comprising: providing particles of an amorphous soft magnetic alloy, wherein the soft magnetic alloy has the composition M α Y β Z γ , wherein M is at least one element from the group including Fe, Ni and Co, wherein Y is at least one element from the group including B, C and P, wherein Z is at least one element from the group including Si, Al and Ge, and wherein α, β and γ are specified in atomic percent and meet the following conditions: 70≦α≦85; 5≦β≦20; and 0≦γ≦20; wherein up to 10 atomic percent of the M component may be replaced by at least one element from the group including Ti, V, Cr, Mn, Cu, Zr, Nb, Mo, Ta and W; and wherein up to 10 atomic percent of the (Y+Z) component may be replaced by at least one element from the group including In, Sn, Sb and Pb; mixing the particles with a first binder having a curing temperature T 1,cure and a decomposition temperature T 1,decompose and a second binder having a curing temperature T 2,cure and a decomposition temperature T 2,decompose , wherein T 1,cure <T 2,cure ≦T 1,decompose <T 2,decompose ; pressing the mix of particles and binders to the shape of a magnet core; curing the first binder; heat treating of the magnet core and curing of the second binder at a heat treatment temperature T anneal >T 2,cure .