Ferromagnetic powder composition and method for producing the same

A ferromagnetic powder composition comprising (i) soft magnetic iron-based core particles, and (ii) a first coating at least partially covering and being in direct contact with the surface of the core particles. The first coating comprises (a) a silicate of the general formula (K2O)[alpha](SiO2)[beta], wherein [alpha] is moles of K2O, [beta] is moles of SiO2, and the [beta]/[alpha] molar ratio is in the interval from 0.5 to 4.1, wherein the silicate is present in an amount of 0.02 to 1.0 wt% calculated based on the total weight of the ferromagnetic powder composition, (b) particles of a compound comprising bismuth and oxygen having a D50 in the interval of 0.1 to 10 [mu]m, and (c) nanoparticles having a D50 of 10-200 nm. Methods of producing a ferromagnetic powder composition and manufacturing an object from the ferromagnetic powder composition and objects obtained by the methods or comprising a compacted ferromagnetic powder composition, are also provided.