FIELD: metallurgy.
SUBSTANCE: from copper and niobium powders they prepare charge, cold pressing and sintering is carried out. Cadmium is added to a stock by diffusion saturation by means of its soaking in atmosphere, containing cadmium vapours. The sintered stock is exposed to deep treatment with pressure, which is combined with hot extrusion and subsequent cold rolling or drawing. Afterwards additional pressing and annealing is carried out.
EFFECT: reduced transition resistance in a contact pair, increased electric erosion resistance, higher durable mechanical strength in modes of multi-cycle impact loads and resistance against welding.
1 tbl
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| SILVER-BASE SINTERED ELECTRIC-CONTACT MATERIAL | 1978 |
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SU778309A1 |
