en The filter for extracting metals from solutions by cementation of the metals comprises (a) a finely dispersed metal-cementer powder with a size of 0.01-5000 microns, which is selected from the group consisting of Zn, Fe, Ni, Si, Ti, Pb or Sb, or (b) a finely dispersed metal-cementer powder in the form of zinc with a size of 0.01-5000 microns ...
FIELD: metallurgy. SUBSTANCE: invention can be used for production of bearing parts, gear transmissions and instruments utilised for heat processing and extrusion, as well as for a range of medical tools. The nanocristallic metal material is designed in the shape of an aggregate from the metal nanocristallic grains containing 0.4-5.0 % of the nitrogen …