| 摘要 |
FIELD: metallurgy.SUBSTANCE: hot formed element of coated sheet steel surface layer comprises are of Ni diffusion, intermetallide compound layer and ZnO layer. Said layers are overcoated with Ni diffusion area. Intermetallide compound layer corresponds to ?-phase displayed at Zn-Ni alloy phase equilibrium diagram. Said layer has intrinsic potential of submersion in air-saturated water solution of NaCl with 0.5 mol/l concentration at 25 °C±5°C in the range of -600 to -360 mV relative to standard hydrogen electrode. Said element is produced by heating sheet steel with Ni-based coat containing on its surface a layer of coat from Zi-Ni alloy containing 13 wt % of mote of Ni in the temperature range of Actransition to 1200°C with subsequent hot forming of steel sheet.EFFECT: higher corrosion resistance, better coat adhesion.16 cl, 3 dwg, 4 tbl, 1 ex |
