SPRAY POWDER WITH A SUPERFERRITIC IRON-BASED COMPOUND AS WELL AS A SUBSTRATE IN PARTICULAR A BRAKE DISK WITH A THERMAL SPRAY LAYER

摘要

The present invention relates to a spray powder having a superferrite iron-based compound for thermal coating of a substrate, wherein the spray powder, except impurities, includes C, Mn, Cr, Mo, Ni, Nb, P, S, Si, And a chemical element selected from the group consisting of Fe, Al, O, and Zr. According to the invention, the spray powder has the following chemical composition: 0.7 wt% or less of C, 0.7 wt% or less of Mn, 0.5 wt% or less of Ni, 1.2 wt% or less of Nb, 0.1 wt% or less of P, 0.1 Less than or equal to S, less than or equal to 0.2% by weight of Si, Cr in the range of 20 to 40% by weight, Mo in the range of 2.0 to 6% by weight, up to 50% by weight of the ceramic component Al ₂ O ₃ / ZrO ₂ , and the remaining amount of Fe In which up to 0.4% by weight of additional chemical elements are contained as impurities. The invention also relates to a substrate, in particular a brake disc, with a superferrite thermal spray layer.